diff --git a/apis/monitoring/v1beta1/monitoringdashboard_types.go b/apis/monitoring/v1beta1/monitoringdashboard_types.go
index d08a70712c..d6eac80630 100644
--- a/apis/monitoring/v1beta1/monitoringdashboard_types.go
+++ b/apis/monitoring/v1beta1/monitoringdashboard_types.go
@@ -73,10 +73,8 @@ type XyChart struct {
 	// The properties applied to the y-axis.
 	YAxis *XyChart_Axis `json:"yAxis,omitempty"`
 
-	/*NOTYET
 	// The properties applied to the y2-axis.
 	Y2Axis *XyChart_Axis `json:"y2Axis,omitempty"`
-	*/
 
 	// Display options for the chart.
 	ChartOptions *ChartOptions `json:"chartOptions,omitempty"`
@@ -105,10 +103,8 @@ type XyChart_DataSet struct {
 	//  make sense to fetch and align data at one minute intervals.
 	MinAlignmentPeriod *string `json:"minAlignmentPeriod,omitempty"`
 
-	/*NOTYET
 	// Optional. The target axis to use for plotting the metric.
 	TargetAxis *string `json:"targetAxis,omitempty"`
-	*/
 }
 
 // +kcc:proto=google.monitoring.dashboard.v1.XyChart.Axis
diff --git a/apis/monitoring/v1beta1/zz_generated.deepcopy.go b/apis/monitoring/v1beta1/zz_generated.deepcopy.go
index 82139e7806..c5977df3a9 100644
--- a/apis/monitoring/v1beta1/zz_generated.deepcopy.go
+++ b/apis/monitoring/v1beta1/zz_generated.deepcopy.go
@@ -1394,6 +1394,11 @@ func (in *XyChart) DeepCopyInto(out *XyChart) {
 		*out = new(XyChart_Axis)
 		(*in).DeepCopyInto(*out)
 	}
+	if in.Y2Axis != nil {
+		in, out := &in.Y2Axis, &out.Y2Axis
+		*out = new(XyChart_Axis)
+		(*in).DeepCopyInto(*out)
+	}
 	if in.ChartOptions != nil {
 		in, out := &in.ChartOptions, &out.ChartOptions
 		*out = new(ChartOptions)
@@ -1461,6 +1466,11 @@ func (in *XyChart_DataSet) DeepCopyInto(out *XyChart_DataSet) {
 		*out = new(string)
 		**out = **in
 	}
+	if in.TargetAxis != nil {
+		in, out := &in.TargetAxis, &out.TargetAxis
+		*out = new(string)
+		**out = **in
+	}
 	return
 }
 
diff --git a/config/crds/resources/apiextensions.k8s.io_v1_customresourcedefinition_monitoringdashboards.monitoring.cnrm.cloud.google.com.yaml b/config/crds/resources/apiextensions.k8s.io_v1_customresourcedefinition_monitoringdashboards.monitoring.cnrm.cloud.google.com.yaml
index dd684086a2..e7163375e2 100644
--- a/config/crds/resources/apiextensions.k8s.io_v1_customresourcedefinition_monitoringdashboards.monitoring.cnrm.cloud.google.com.yaml
+++ b/config/crds/resources/apiextensions.k8s.io_v1_customresourcedefinition_monitoringdashboards.monitoring.cnrm.cloud.google.com.yaml
@@ -2329,6 +2329,10 @@ spec:
                                           description: How this data should be plotted
                                             on the chart.
                                           type: string
+                                        targetAxis:
+                                          description: Optional. The target axis to
+                                            use for plotting the metric.
+                                          type: string
                                         timeSeriesQuery:
                                           description: Required. Fields for querying
                                             time series data from the Stackdriver
@@ -2965,6 +2969,17 @@ spec:
                                           linear scale is used.
                                         type: string
                                     type: object
+                                  y2Axis:
+                                    description: The properties applied to the y2-axis.
+                                    properties:
+                                      label:
+                                        description: The label of the axis.
+                                        type: string
+                                      scale:
+                                        description: The axis scale. By default, a
+                                          linear scale is used.
+                                        type: string
+                                    type: object
                                   yAxis:
                                     description: The properties applied to the y-axis.
                                     properties:
@@ -5155,6 +5170,10 @@ spec:
                                     description: How this data should be plotted on
                                       the chart.
                                     type: string
+                                  targetAxis:
+                                    description: Optional. The target axis to use
+                                      for plotting the metric.
+                                    type: string
                                   timeSeriesQuery:
                                     description: Required. Fields for querying time
                                       series data from the Stackdriver metrics API.
@@ -5754,6 +5773,17 @@ spec:
                                     scale is used.
                                   type: string
                               type: object
+                            y2Axis:
+                              description: The properties applied to the y2-axis.
+                              properties:
+                                label:
+                                  description: The label of the axis.
+                                  type: string
+                                scale:
+                                  description: The axis scale. By default, a linear
+                                    scale is used.
+                                  type: string
+                              type: object
                             yAxis:
                               description: The properties applied to the y-axis.
                               properties:
@@ -7998,6 +8028,10 @@ spec:
                                         description: How this data should be plotted
                                           on the chart.
                                         type: string
+                                      targetAxis:
+                                        description: Optional. The target axis to
+                                          use for plotting the metric.
+                                        type: string
                                       timeSeriesQuery:
                                         description: Required. Fields for querying
                                           time series data from the Stackdriver metrics
@@ -8619,6 +8653,17 @@ spec:
                                         scale is used.
                                       type: string
                                   type: object
+                                y2Axis:
+                                  description: The properties applied to the y2-axis.
+                                  properties:
+                                    label:
+                                      description: The label of the axis.
+                                      type: string
+                                    scale:
+                                      description: The axis scale. By default, a linear
+                                        scale is used.
+                                      type: string
+                                  type: object
                                 yAxis:
                                   description: The properties applied to the y-axis.
                                   properties:
@@ -10962,6 +11007,10 @@ spec:
                                           description: How this data should be plotted
                                             on the chart.
                                           type: string
+                                        targetAxis:
+                                          description: Optional. The target axis to
+                                            use for plotting the metric.
+                                          type: string
                                         timeSeriesQuery:
                                           description: Required. Fields for querying
                                             time series data from the Stackdriver
@@ -11598,6 +11647,17 @@ spec:
                                           linear scale is used.
                                         type: string
                                     type: object
+                                  y2Axis:
+                                    description: The properties applied to the y2-axis.
+                                    properties:
+                                      label:
+                                        description: The label of the axis.
+                                        type: string
+                                      scale:
+                                        description: The axis scale. By default, a
+                                          linear scale is used.
+                                        type: string
+                                    type: object
                                   yAxis:
                                     description: The properties applied to the y-axis.
                                     properties:
diff --git a/docs/releasenotes/release-1.120.md b/docs/releasenotes/release-1.120.md
index fc17ac5062..d0acc4f6c3 100644
--- a/docs/releasenotes/release-1.120.md
+++ b/docs/releasenotes/release-1.120.md
@@ -36,6 +36,7 @@ output fields from GCP APIs are in `status.observedState.*`
   * Added `sectionHeader` widgets.
   * Added `singleViewGroup` widgets.
 
+  * Added `dataSets.targetAxis` and `y2Axis` fields to `xyChart` widgets.
   * Added `id` field to all widgets.
   * Added `prometheusQuery` and `outputFullDuration` to timeSeriesQuery.
   * Added `style` fields to text widgets.
diff --git a/pkg/clients/generated/apis/monitoring/v1beta1/monitoringdashboard_types.go b/pkg/clients/generated/apis/monitoring/v1beta1/monitoringdashboard_types.go
index df6198a2cb..0d94af48bb 100644
--- a/pkg/clients/generated/apis/monitoring/v1beta1/monitoringdashboard_types.go
+++ b/pkg/clients/generated/apis/monitoring/v1beta1/monitoringdashboard_types.go
@@ -166,6 +166,10 @@ type DashboardDataSets struct {
 	// +optional
 	PlotType *string `json:"plotType,omitempty"`
 
+	/* Optional. The target axis to use for plotting the metric. */
+	// +optional
+	TargetAxis *string `json:"targetAxis,omitempty"`
+
 	/* Required. Fields for querying time series data from the Stackdriver metrics API. */
 	TimeSeriesQuery DashboardTimeSeriesQuery `json:"timeSeriesQuery"`
 }
@@ -807,11 +811,25 @@ type DashboardXyChart struct {
 	// +optional
 	XAxis *DashboardXAxis `json:"xAxis,omitempty"`
 
+	/* The properties applied to the y2-axis. */
+	// +optional
+	Y2Axis *DashboardY2Axis `json:"y2Axis,omitempty"`
+
 	/* The properties applied to the y-axis. */
 	// +optional
 	YAxis *DashboardYAxis `json:"yAxis,omitempty"`
 }
 
+type DashboardY2Axis struct {
+	/* The label of the axis. */
+	// +optional
+	Label *string `json:"label,omitempty"`
+
+	/* The axis scale. By default, a linear scale is used. */
+	// +optional
+	Scale *string `json:"scale,omitempty"`
+}
+
 type DashboardYAxis struct {
 	/* The label of the axis. */
 	// +optional
diff --git a/pkg/clients/generated/apis/monitoring/v1beta1/zz_generated.deepcopy.go b/pkg/clients/generated/apis/monitoring/v1beta1/zz_generated.deepcopy.go
index 540aea3ee8..7420560bdc 100644
--- a/pkg/clients/generated/apis/monitoring/v1beta1/zz_generated.deepcopy.go
+++ b/pkg/clients/generated/apis/monitoring/v1beta1/zz_generated.deepcopy.go
@@ -733,6 +733,11 @@ func (in *DashboardDataSets) DeepCopyInto(out *DashboardDataSets) {
 		*out = new(string)
 		**out = **in
 	}
+	if in.TargetAxis != nil {
+		in, out := &in.TargetAxis, &out.TargetAxis
+		*out = new(string)
+		**out = **in
+	}
 	in.TimeSeriesQuery.DeepCopyInto(&out.TimeSeriesQuery)
 	return
 }
@@ -1874,6 +1879,11 @@ func (in *DashboardXyChart) DeepCopyInto(out *DashboardXyChart) {
 		*out = new(DashboardXAxis)
 		(*in).DeepCopyInto(*out)
 	}
+	if in.Y2Axis != nil {
+		in, out := &in.Y2Axis, &out.Y2Axis
+		*out = new(DashboardY2Axis)
+		(*in).DeepCopyInto(*out)
+	}
 	if in.YAxis != nil {
 		in, out := &in.YAxis, &out.YAxis
 		*out = new(DashboardYAxis)
@@ -1892,6 +1902,32 @@ func (in *DashboardXyChart) DeepCopy() *DashboardXyChart {
 	return out
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *DashboardY2Axis) DeepCopyInto(out *DashboardY2Axis) {
+	*out = *in
+	if in.Label != nil {
+		in, out := &in.Label, &out.Label
+		*out = new(string)
+		**out = **in
+	}
+	if in.Scale != nil {
+		in, out := &in.Scale, &out.Scale
+		*out = new(string)
+		**out = **in
+	}
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new DashboardY2Axis.
+func (in *DashboardY2Axis) DeepCopy() *DashboardY2Axis {
+	if in == nil {
+		return nil
+	}
+	out := new(DashboardY2Axis)
+	in.DeepCopyInto(out)
+	return out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *DashboardYAxis) DeepCopyInto(out *DashboardYAxis) {
 	*out = *in
diff --git a/pkg/controller/direct/monitoring/dashboard_generated.mappings.go b/pkg/controller/direct/monitoring/dashboard_generated.mappings.go
index c5553ff97f..26cd484e20 100644
--- a/pkg/controller/direct/monitoring/dashboard_generated.mappings.go
+++ b/pkg/controller/direct/monitoring/dashboard_generated.mappings.go
@@ -840,7 +840,7 @@ func XyChart_FromProto(mapCtx *MapContext, in *pb.XyChart) *krm.XyChart {
 	out.Thresholds = Slice_FromProto(mapCtx, in.Thresholds, Threshold_FromProto)
 	out.XAxis = XyChart_Axis_FromProto(mapCtx, in.GetXAxis())
 	out.YAxis = XyChart_Axis_FromProto(mapCtx, in.GetYAxis())
-	// MISSING: Y2Axis
+	out.Y2Axis = XyChart_Axis_FromProto(mapCtx, in.GetY2Axis())
 	out.ChartOptions = ChartOptions_FromProto(mapCtx, in.GetChartOptions())
 	return out
 }
@@ -854,7 +854,7 @@ func XyChart_ToProto(mapCtx *MapContext, in *krm.XyChart) *pb.XyChart {
 	out.Thresholds = Slice_ToProto(mapCtx, in.Thresholds, Threshold_ToProto)
 	out.XAxis = XyChart_Axis_ToProto(mapCtx, in.XAxis)
 	out.YAxis = XyChart_Axis_ToProto(mapCtx, in.YAxis)
-	// MISSING: Y2Axis
+	out.Y2Axis = XyChart_Axis_ToProto(mapCtx, in.Y2Axis)
 	out.ChartOptions = ChartOptions_ToProto(mapCtx, in.ChartOptions)
 	return out
 }
@@ -885,7 +885,7 @@ func XyChart_DataSet_FromProto(mapCtx *MapContext, in *pb.XyChart_DataSet) *krm.
 	out.PlotType = Enum_FromProto(mapCtx, in.PlotType)
 	out.LegendTemplate = LazyPtr(in.GetLegendTemplate())
 	out.MinAlignmentPeriod = DataSet_MinAlignmentPeriod_FromProto(mapCtx, in.GetMinAlignmentPeriod())
-	// MISSING: TargetAxis
+	out.TargetAxis = Enum_FromProto(mapCtx, in.TargetAxis)
 	return out
 }
 func XyChart_DataSet_ToProto(mapCtx *MapContext, in *krm.XyChart_DataSet) *pb.XyChart_DataSet {
@@ -897,6 +897,6 @@ func XyChart_DataSet_ToProto(mapCtx *MapContext, in *krm.XyChart_DataSet) *pb.Xy
 	out.PlotType = Enum_ToProto[pb.XyChart_DataSet_PlotType](mapCtx, in.PlotType)
 	out.LegendTemplate = ValueOf(in.LegendTemplate)
 	out.MinAlignmentPeriod = DataSet_MinAlignmentPeriod_ToProto(mapCtx, in.MinAlignmentPeriod)
-	// MISSING: TargetAxis
+	out.TargetAxis = Enum_ToProto[pb.XyChart_DataSet_TargetAxis](mapCtx, in.TargetAxis)
 	return out
 }
diff --git a/pkg/test/resourcefixture/testdata/basic/monitoring/v1beta1/monitoringdashboard/monitoringdashboardbasic/_generated_export_monitoringdashboardbasic.golden b/pkg/test/resourcefixture/testdata/basic/monitoring/v1beta1/monitoringdashboard/monitoringdashboardbasic/_generated_export_monitoringdashboardbasic.golden
index 6167bc9cb8..d1d69b48a9 100644
--- a/pkg/test/resourcefixture/testdata/basic/monitoring/v1beta1/monitoringdashboard/monitoringdashboardbasic/_generated_export_monitoringdashboardbasic.golden
+++ b/pkg/test/resourcefixture/testdata/basic/monitoring/v1beta1/monitoringdashboard/monitoringdashboardbasic/_generated_export_monitoringdashboardbasic.golden
@@ -11,6 +11,7 @@ spec:
         xyChart:
           dataSets:
           - plotType: LINE
+            targetAxis: Y1
             timeSeriesQuery:
               timeSeriesFilter:
                 aggregation:
@@ -29,6 +30,7 @@ spec:
         xyChart:
           dataSets:
           - plotType: LINE
+            targetAxis: Y1
             timeSeriesQuery:
               timeSeriesFilter:
                 aggregation:
diff --git a/pkg/test/resourcefixture/testdata/basic/monitoring/v1beta1/monitoringdashboard/monitoringdashboardfull/_generated_export_monitoringdashboardfull.golden b/pkg/test/resourcefixture/testdata/basic/monitoring/v1beta1/monitoringdashboard/monitoringdashboardfull/_generated_export_monitoringdashboardfull.golden
index 95456d1ce5..1760e4a275 100644
--- a/pkg/test/resourcefixture/testdata/basic/monitoring/v1beta1/monitoringdashboard/monitoringdashboardfull/_generated_export_monitoringdashboardfull.golden
+++ b/pkg/test/resourcefixture/testdata/basic/monitoring/v1beta1/monitoringdashboard/monitoringdashboardfull/_generated_export_monitoringdashboardfull.golden
@@ -14,6 +14,7 @@ spec:
         xyChart:
           dataSets:
           - plotType: LINE
+            targetAxis: Y2
             timeSeriesQuery:
               timeSeriesFilter:
                 aggregation:
@@ -21,6 +22,9 @@ spec:
                 filter: metric.type="agent.googleapis.com/nginx/connections/accepted_count"
               unitOverride: "1"
           timeshiftDuration: 600.5s
+          y2Axis:
+            label: y2Axis
+            scale: LOG10
           yAxis:
             label: y1Axis
             scale: LINEAR
@@ -40,6 +44,7 @@ spec:
         xyChart:
           dataSets:
           - plotType: STACKED_BAR
+            targetAxis: Y1
             timeSeriesQuery:
               timeSeriesFilter:
                 aggregation:
diff --git a/pkg/test/resourcefixture/testdata/basic/monitoring/v1beta1/monitoringdashboard/monitoringdashboardfull/_generated_object_monitoringdashboardfull.golden.yaml b/pkg/test/resourcefixture/testdata/basic/monitoring/v1beta1/monitoringdashboard/monitoringdashboardfull/_generated_object_monitoringdashboardfull.golden.yaml
index a960fe2da2..7d4b4690f4 100644
--- a/pkg/test/resourcefixture/testdata/basic/monitoring/v1beta1/monitoringdashboard/monitoringdashboardfull/_generated_object_monitoringdashboardfull.golden.yaml
+++ b/pkg/test/resourcefixture/testdata/basic/monitoring/v1beta1/monitoringdashboard/monitoringdashboardfull/_generated_object_monitoringdashboardfull.golden.yaml
@@ -23,6 +23,7 @@ spec:
         xyChart:
           dataSets:
           - plotType: LINE
+            targetAxis: Y2
             timeSeriesQuery:
               timeSeriesFilter:
                 aggregation:
@@ -30,6 +31,9 @@ spec:
                 filter: metric.type="agent.googleapis.com/nginx/connections/accepted_count"
               unitOverride: "1"
           timeshiftDuration: 600.500s
+          y2Axis:
+            label: y2Axis
+            scale: LOG10
           yAxis:
             label: y1Axis
             scale: LINEAR
diff --git a/pkg/test/resourcefixture/testdata/basic/monitoring/v1beta1/monitoringdashboard/monitoringdashboardfull/_http.log b/pkg/test/resourcefixture/testdata/basic/monitoring/v1beta1/monitoringdashboard/monitoringdashboardfull/_http.log
index 3d280ff1e4..25ba95b6ab 100644
--- a/pkg/test/resourcefixture/testdata/basic/monitoring/v1beta1/monitoringdashboard/monitoringdashboardfull/_http.log
+++ b/pkg/test/resourcefixture/testdata/basic/monitoring/v1beta1/monitoringdashboard/monitoringdashboardfull/_http.log
@@ -208,6 +208,7 @@ x-goog-request-params: parent=projects%2F${projectId}
               "dataSets": [
                 {
                   "plotType": 1,
+                  "targetAxis": 2,
                   "timeSeriesQuery": {
                     "timeSeriesFilter": {
                       "aggregation": {
@@ -220,6 +221,10 @@ x-goog-request-params: parent=projects%2F${projectId}
                 }
               ],
               "timeshiftDuration": "600.500s",
+              "y2Axis": {
+                "label": "y2Axis",
+                "scale": 2
+              },
               "yAxis": {
                 "label": "y1Axis",
                 "scale": 1
@@ -447,7 +452,7 @@ X-Xss-Protection: 0
               "dataSets": [
                 {
                   "plotType": "LINE",
-                  "targetAxis": "Y1",
+                  "targetAxis": "Y2",
                   "timeSeriesQuery": {
                     "timeSeriesFilter": {
                       "aggregation": {
@@ -460,6 +465,10 @@ X-Xss-Protection: 0
                 }
               ],
               "timeshiftDuration": "600.500s",
+              "y2Axis": {
+                "label": "y2Axis",
+                "scale": "LOG10"
+              },
               "yAxis": {
                 "label": "y1Axis",
                 "scale": "LINEAR"
@@ -696,7 +705,7 @@ X-Xss-Protection: 0
               "dataSets": [
                 {
                   "plotType": "LINE",
-                  "targetAxis": "Y1",
+                  "targetAxis": "Y2",
                   "timeSeriesQuery": {
                     "timeSeriesFilter": {
                       "aggregation": {
@@ -709,6 +718,10 @@ X-Xss-Protection: 0
                 }
               ],
               "timeshiftDuration": "600.500s",
+              "y2Axis": {
+                "label": "y2Axis",
+                "scale": "LOG10"
+              },
               "yAxis": {
                 "label": "y1Axis",
                 "scale": "LINEAR"
@@ -934,6 +947,7 @@ x-goog-request-params: dashboard.name=projects%2F${projectId}%2Fdashboards%2Fmon
               "dataSets": [
                 {
                   "plotType": 1,
+                  "targetAxis": 2,
                   "timeSeriesQuery": {
                     "timeSeriesFilter": {
                       "aggregation": {
@@ -946,6 +960,10 @@ x-goog-request-params: dashboard.name=projects%2F${projectId}%2Fdashboards%2Fmon
                 }
               ],
               "timeshiftDuration": "600.500s",
+              "y2Axis": {
+                "label": "y2Axis",
+                "scale": 2
+              },
               "yAxis": {
                 "label": "y1Axis",
                 "scale": 1
@@ -1173,7 +1191,7 @@ X-Xss-Protection: 0
               "dataSets": [
                 {
                   "plotType": "LINE",
-                  "targetAxis": "Y1",
+                  "targetAxis": "Y2",
                   "timeSeriesQuery": {
                     "timeSeriesFilter": {
                       "aggregation": {
@@ -1186,6 +1204,10 @@ X-Xss-Protection: 0
                 }
               ],
               "timeshiftDuration": "600.500s",
+              "y2Axis": {
+                "label": "y2Axis",
+                "scale": "LOG10"
+              },
               "yAxis": {
                 "label": "y1Axis",
                 "scale": "LINEAR"
@@ -1422,7 +1444,7 @@ X-Xss-Protection: 0
               "dataSets": [
                 {
                   "plotType": "LINE",
-                  "targetAxis": "Y1",
+                  "targetAxis": "Y2",
                   "timeSeriesQuery": {
                     "timeSeriesFilter": {
                       "aggregation": {
@@ -1435,6 +1457,10 @@ X-Xss-Protection: 0
                 }
               ],
               "timeshiftDuration": "600.500s",
+              "y2Axis": {
+                "label": "y2Axis",
+                "scale": "LOG10"
+              },
               "yAxis": {
                 "label": "y1Axis",
                 "scale": "LINEAR"
diff --git a/pkg/test/resourcefixture/testdata/basic/monitoring/v1beta1/monitoringdashboard/monitoringdashboardfull/create.yaml b/pkg/test/resourcefixture/testdata/basic/monitoring/v1beta1/monitoringdashboard/monitoringdashboardfull/create.yaml
index a1e560cc1f..95ccd54197 100644
--- a/pkg/test/resourcefixture/testdata/basic/monitoring/v1beta1/monitoringdashboard/monitoringdashboardfull/create.yaml
+++ b/pkg/test/resourcefixture/testdata/basic/monitoring/v1beta1/monitoringdashboard/monitoringdashboardfull/create.yaml
@@ -35,7 +35,8 @@ spec:
       - title: "Widget 1"
         xyChart:
           dataSets:
-          - timeSeriesQuery:
+          - targetAxis: Y2
+            timeSeriesQuery:
               timeSeriesFilter:
                 filter: metric.type="agent.googleapis.com/nginx/connections/accepted_count"
                 aggregation:
@@ -46,6 +47,9 @@ spec:
           yAxis:
             label: y1Axis
             scale: LINEAR
+          y2Axis:
+            label: y2Axis
+            scale: LOG10
       - text:
           content: "Widget 2"
           format: "MARKDOWN"
diff --git a/pkg/test/resourcefixture/testdata/basic/monitoring/v1beta1/monitoringdashboard/monitoringdashboardrefs/_generated_export_monitoringdashboardrefs.golden b/pkg/test/resourcefixture/testdata/basic/monitoring/v1beta1/monitoringdashboard/monitoringdashboardrefs/_generated_export_monitoringdashboardrefs.golden
index 52659b8118..5c0cfc6215 100644
--- a/pkg/test/resourcefixture/testdata/basic/monitoring/v1beta1/monitoringdashboard/monitoringdashboardrefs/_generated_export_monitoringdashboardrefs.golden
+++ b/pkg/test/resourcefixture/testdata/basic/monitoring/v1beta1/monitoringdashboard/monitoringdashboardrefs/_generated_export_monitoringdashboardrefs.golden
@@ -11,6 +11,7 @@ spec:
         xyChart:
           dataSets:
           - plotType: LINE
+            targetAxis: Y1
             timeSeriesQuery:
               timeSeriesFilter:
                 aggregation:
@@ -29,6 +30,7 @@ spec:
         xyChart:
           dataSets:
           - plotType: STACKED_BAR
+            targetAxis: Y1
             timeSeriesQuery:
               timeSeriesFilter:
                 aggregation:
diff --git a/scripts/generate-google3-docs/resource-reference/generated/resource-docs/monitoring/monitoringdashboard.md b/scripts/generate-google3-docs/resource-reference/generated/resource-docs/monitoring/monitoringdashboard.md
index 227a57a235..4ef7636aa5 100644
--- a/scripts/generate-google3-docs/resource-reference/generated/resource-docs/monitoring/monitoringdashboard.md
+++ b/scripts/generate-google3-docs/resource-reference/generated/resource-docs/monitoring/monitoringdashboard.md
@@ -317,6 +317,7 @@ columnLayout:
         - legendTemplate: string
           minAlignmentPeriod: string
           plotType: string
+          targetAxis: string
           timeSeriesQuery:
             outputFullDuration: boolean
             prometheusQuery: string
@@ -377,6 +378,9 @@ columnLayout:
         xAxis:
           label: string
           scale: string
+        y2Axis:
+          label: string
+          scale: string
         yAxis:
           label: string
           scale: string
@@ -625,6 +629,7 @@ gridLayout:
       - legendTemplate: string
         minAlignmentPeriod: string
         plotType: string
+        targetAxis: string
         timeSeriesQuery:
           outputFullDuration: boolean
           prometheusQuery: string
@@ -685,6 +690,9 @@ gridLayout:
       xAxis:
         label: string
         scale: string
+      y2Axis:
+        label: string
+        scale: string
       yAxis:
         label: string
         scale: string
@@ -929,6 +937,7 @@ mosaicLayout:
         - legendTemplate: string
           minAlignmentPeriod: string
           plotType: string
+          targetAxis: string
           timeSeriesQuery:
             outputFullDuration: boolean
             prometheusQuery: string
@@ -989,6 +998,9 @@ mosaicLayout:
         xAxis:
           label: string
           scale: string
+        y2Axis:
+          label: string
+          scale: string
         yAxis:
           label: string
           scale: string
@@ -1241,6 +1253,7 @@ rowLayout:
         - legendTemplate: string
           minAlignmentPeriod: string
           plotType: string
+          targetAxis: string
           timeSeriesQuery:
             outputFullDuration: boolean
             prometheusQuery: string
@@ -1301,6 +1314,9 @@ rowLayout:
         xAxis:
           label: string
           scale: string
+        y2Axis:
+          label: string
+          scale: string
         yAxis:
           label: string
           scale: string
@@ -4449,6 +4465,16 @@ rowLayout:
             <p>{% verbatim %}How this data should be plotted on the chart.{% endverbatim %}</p>
         </td>
     </tr>
+    <tr>
+        <td>
+            <p><code>columnLayout.columns[].widgets[].xyChart.dataSets[].targetAxis</code></p>
+            <p><i>Optional</i></p>
+        </td>
+        <td>
+            <p><code class="apitype">string</code></p>
+            <p>{% verbatim %}Optional. The target axis to use for plotting the metric.{% endverbatim %}</p>
+        </td>
+    </tr>
     <tr>
         <td>
             <p><code>columnLayout.columns[].widgets[].xyChart.dataSets[].timeSeriesQuery</code></p>
@@ -5260,6 +5286,36 @@ rowLayout:
             <p>{% verbatim %}The axis scale. By default, a linear scale is used.{% endverbatim %}</p>
         </td>
     </tr>
+    <tr>
+        <td>
+            <p><code>columnLayout.columns[].widgets[].xyChart.y2Axis</code></p>
+            <p><i>Optional</i></p>
+        </td>
+        <td>
+            <p><code class="apitype">object</code></p>
+            <p>{% verbatim %}The properties applied to the y2-axis.{% endverbatim %}</p>
+        </td>
+    </tr>
+    <tr>
+        <td>
+            <p><code>columnLayout.columns[].widgets[].xyChart.y2Axis.label</code></p>
+            <p><i>Optional</i></p>
+        </td>
+        <td>
+            <p><code class="apitype">string</code></p>
+            <p>{% verbatim %}The label of the axis.{% endverbatim %}</p>
+        </td>
+    </tr>
+    <tr>
+        <td>
+            <p><code>columnLayout.columns[].widgets[].xyChart.y2Axis.scale</code></p>
+            <p><i>Optional</i></p>
+        </td>
+        <td>
+            <p><code class="apitype">string</code></p>
+            <p>{% verbatim %}The axis scale. By default, a linear scale is used.{% endverbatim %}</p>
+        </td>
+    </tr>
     <tr>
         <td>
             <p><code>columnLayout.columns[].widgets[].xyChart.yAxis</code></p>
@@ -8476,6 +8532,16 @@ rowLayout:
             <p>{% verbatim %}How this data should be plotted on the chart.{% endverbatim %}</p>
         </td>
     </tr>
+    <tr>
+        <td>
+            <p><code>gridLayout.widgets[].xyChart.dataSets[].targetAxis</code></p>
+            <p><i>Optional</i></p>
+        </td>
+        <td>
+            <p><code class="apitype">string</code></p>
+            <p>{% verbatim %}Optional. The target axis to use for plotting the metric.{% endverbatim %}</p>
+        </td>
+    </tr>
     <tr>
         <td>
             <p><code>gridLayout.widgets[].xyChart.dataSets[].timeSeriesQuery</code></p>
@@ -9287,6 +9353,36 @@ rowLayout:
             <p>{% verbatim %}The axis scale. By default, a linear scale is used.{% endverbatim %}</p>
         </td>
     </tr>
+    <tr>
+        <td>
+            <p><code>gridLayout.widgets[].xyChart.y2Axis</code></p>
+            <p><i>Optional</i></p>
+        </td>
+        <td>
+            <p><code class="apitype">object</code></p>
+            <p>{% verbatim %}The properties applied to the y2-axis.{% endverbatim %}</p>
+        </td>
+    </tr>
+    <tr>
+        <td>
+            <p><code>gridLayout.widgets[].xyChart.y2Axis.label</code></p>
+            <p><i>Optional</i></p>
+        </td>
+        <td>
+            <p><code class="apitype">string</code></p>
+            <p>{% verbatim %}The label of the axis.{% endverbatim %}</p>
+        </td>
+    </tr>
+    <tr>
+        <td>
+            <p><code>gridLayout.widgets[].xyChart.y2Axis.scale</code></p>
+            <p><i>Optional</i></p>
+        </td>
+        <td>
+            <p><code class="apitype">string</code></p>
+            <p>{% verbatim %}The axis scale. By default, a linear scale is used.{% endverbatim %}</p>
+        </td>
+    </tr>
     <tr>
         <td>
             <p><code>gridLayout.widgets[].xyChart.yAxis</code></p>
@@ -12453,6 +12549,16 @@ rowLayout:
             <p>{% verbatim %}How this data should be plotted on the chart.{% endverbatim %}</p>
         </td>
     </tr>
+    <tr>
+        <td>
+            <p><code>mosaicLayout.tiles[].widget.xyChart.dataSets[].targetAxis</code></p>
+            <p><i>Optional</i></p>
+        </td>
+        <td>
+            <p><code class="apitype">string</code></p>
+            <p>{% verbatim %}Optional. The target axis to use for plotting the metric.{% endverbatim %}</p>
+        </td>
+    </tr>
     <tr>
         <td>
             <p><code>mosaicLayout.tiles[].widget.xyChart.dataSets[].timeSeriesQuery</code></p>
@@ -13264,6 +13370,36 @@ rowLayout:
             <p>{% verbatim %}The axis scale. By default, a linear scale is used.{% endverbatim %}</p>
         </td>
     </tr>
+    <tr>
+        <td>
+            <p><code>mosaicLayout.tiles[].widget.xyChart.y2Axis</code></p>
+            <p><i>Optional</i></p>
+        </td>
+        <td>
+            <p><code class="apitype">object</code></p>
+            <p>{% verbatim %}The properties applied to the y2-axis.{% endverbatim %}</p>
+        </td>
+    </tr>
+    <tr>
+        <td>
+            <p><code>mosaicLayout.tiles[].widget.xyChart.y2Axis.label</code></p>
+            <p><i>Optional</i></p>
+        </td>
+        <td>
+            <p><code class="apitype">string</code></p>
+            <p>{% verbatim %}The label of the axis.{% endverbatim %}</p>
+        </td>
+    </tr>
+    <tr>
+        <td>
+            <p><code>mosaicLayout.tiles[].widget.xyChart.y2Axis.scale</code></p>
+            <p><i>Optional</i></p>
+        </td>
+        <td>
+            <p><code class="apitype">string</code></p>
+            <p>{% verbatim %}The axis scale. By default, a linear scale is used.{% endverbatim %}</p>
+        </td>
+    </tr>
     <tr>
         <td>
             <p><code>mosaicLayout.tiles[].widget.xyChart.yAxis</code></p>
@@ -16520,6 +16656,16 @@ rowLayout:
             <p>{% verbatim %}How this data should be plotted on the chart.{% endverbatim %}</p>
         </td>
     </tr>
+    <tr>
+        <td>
+            <p><code>rowLayout.rows[].widgets[].xyChart.dataSets[].targetAxis</code></p>
+            <p><i>Optional</i></p>
+        </td>
+        <td>
+            <p><code class="apitype">string</code></p>
+            <p>{% verbatim %}Optional. The target axis to use for plotting the metric.{% endverbatim %}</p>
+        </td>
+    </tr>
     <tr>
         <td>
             <p><code>rowLayout.rows[].widgets[].xyChart.dataSets[].timeSeriesQuery</code></p>
@@ -17331,6 +17477,36 @@ rowLayout:
             <p>{% verbatim %}The axis scale. By default, a linear scale is used.{% endverbatim %}</p>
         </td>
     </tr>
+    <tr>
+        <td>
+            <p><code>rowLayout.rows[].widgets[].xyChart.y2Axis</code></p>
+            <p><i>Optional</i></p>
+        </td>
+        <td>
+            <p><code class="apitype">object</code></p>
+            <p>{% verbatim %}The properties applied to the y2-axis.{% endverbatim %}</p>
+        </td>
+    </tr>
+    <tr>
+        <td>
+            <p><code>rowLayout.rows[].widgets[].xyChart.y2Axis.label</code></p>
+            <p><i>Optional</i></p>
+        </td>
+        <td>
+            <p><code class="apitype">string</code></p>
+            <p>{% verbatim %}The label of the axis.{% endverbatim %}</p>
+        </td>
+    </tr>
+    <tr>
+        <td>
+            <p><code>rowLayout.rows[].widgets[].xyChart.y2Axis.scale</code></p>
+            <p><i>Optional</i></p>
+        </td>
+        <td>
+            <p><code class="apitype">string</code></p>
+            <p>{% verbatim %}The axis scale. By default, a linear scale is used.{% endverbatim %}</p>
+        </td>
+    </tr>
     <tr>
         <td>
             <p><code>rowLayout.rows[].widgets[].xyChart.yAxis</code></p>