diff --git a/.changelog/ae10fe5c667445a28a7ef7abcd638af1.json b/.changelog/ae10fe5c667445a28a7ef7abcd638af1.json
new file mode 100644
index 00000000000..97cbcb9ff10
--- /dev/null
+++ b/.changelog/ae10fe5c667445a28a7ef7abcd638af1.json
@@ -0,0 +1,8 @@
+{
+    "id": "ae10fe5c-6674-45a2-8a7e-f7abcd638af1",
+    "type": "bugfix",
+    "description": "Correct a typo in internal AddAsIsPresigningMiddleware API.",
+    "modules": [
+        "service/internal/presigned-url"
+    ]
+}
\ No newline at end of file
diff --git a/.changelog/c865415248e948c485e2ff07013d2236.json b/.changelog/c865415248e948c485e2ff07013d2236.json
new file mode 100644
index 00000000000..33eed236137
--- /dev/null
+++ b/.changelog/c865415248e948c485e2ff07013d2236.json
@@ -0,0 +1,14 @@
+{
+    "id": "c8654152-48e9-48c4-85e2-ff07013d2236",
+    "type": "bugfix",
+    "description": "Update internal/presigned-url dependency for corrected API name.",
+    "modules": [
+        "service/docdb",
+        "service/ec2",
+        "service/neptune",
+        "service/polly",
+        "service/rds",
+        "service/s3",
+        "service/sts"
+    ]
+}
\ No newline at end of file
diff --git a/codegen/smithy-aws-go-codegen/src/main/java/software/amazon/smithy/aws/go/codegen/AwsHttpPresignURLClientGenerator.java b/codegen/smithy-aws-go-codegen/src/main/java/software/amazon/smithy/aws/go/codegen/AwsHttpPresignURLClientGenerator.java
index 2d578673647..c608d6b37dd 100644
--- a/codegen/smithy-aws-go-codegen/src/main/java/software/amazon/smithy/aws/go/codegen/AwsHttpPresignURLClientGenerator.java
+++ b/codegen/smithy-aws-go-codegen/src/main/java/software/amazon/smithy/aws/go/codegen/AwsHttpPresignURLClientGenerator.java
@@ -484,7 +484,7 @@ private void writeConvertToPresignMiddleware(
                     }
 
                     Symbol addAsPresignMiddlewareSymbol = SymbolUtils.createValueSymbolBuilder(
-                            "AddAsIsPresigingMiddleware",
+                            "AddAsIsPresigningMiddleware",
                             AwsCustomGoDependency.PRESIGNEDURL_CUSTOMIZATION).build();
                     writer.write("err = $T(stack)", addAsPresignMiddlewareSymbol);
                     writer.write("if err != nil { return err }");
diff --git a/service/docdb/api_client.go b/service/docdb/api_client.go
index 4295f8514b9..e265edc256a 100644
--- a/service/docdb/api_client.go
+++ b/service/docdb/api_client.go
@@ -643,7 +643,7 @@ func (c presignConverter) convertToPresignMiddleware(stack *middleware.Stack, op
 	if err != nil {
 		return err
 	}
-	err = presignedurlcust.AddAsIsPresigingMiddleware(stack)
+	err = presignedurlcust.AddAsIsPresigningMiddleware(stack)
 	if err != nil {
 		return err
 	}
diff --git a/service/ec2/api_client.go b/service/ec2/api_client.go
index d3fd49ffece..c8d167b575c 100644
--- a/service/ec2/api_client.go
+++ b/service/ec2/api_client.go
@@ -659,7 +659,7 @@ func (c presignConverter) convertToPresignMiddleware(stack *middleware.Stack, op
 	if err != nil {
 		return err
 	}
-	err = presignedurlcust.AddAsIsPresigingMiddleware(stack)
+	err = presignedurlcust.AddAsIsPresigningMiddleware(stack)
 	if err != nil {
 		return err
 	}
diff --git a/service/internal/presigned-url/context.go b/service/internal/presigned-url/context.go
index cc919701a06..b70c1e25a81 100644
--- a/service/internal/presigned-url/context.go
+++ b/service/internal/presigned-url/context.go
@@ -27,10 +27,10 @@ func GetIsPresigning(ctx context.Context) bool {
 
 type isPresigningKey struct{}
 
-// AddAsIsPresigingMiddleware adds a middleware to the head of the stack that
+// AddAsIsPresigningMiddleware adds a middleware to the head of the stack that
 // will update the stack's context to be flagged as being invoked for the
 // purpose of presigning.
-func AddAsIsPresigingMiddleware(stack *middleware.Stack) error {
+func AddAsIsPresigningMiddleware(stack *middleware.Stack) error {
 	return stack.Initialize.Add(asIsPresigningMiddleware{}, middleware.Before)
 }
 
diff --git a/service/neptune/api_client.go b/service/neptune/api_client.go
index 8ac8cdf5035..c6a5cceb2c5 100644
--- a/service/neptune/api_client.go
+++ b/service/neptune/api_client.go
@@ -642,7 +642,7 @@ func (c presignConverter) convertToPresignMiddleware(stack *middleware.Stack, op
 	if err != nil {
 		return err
 	}
-	err = presignedurlcust.AddAsIsPresigingMiddleware(stack)
+	err = presignedurlcust.AddAsIsPresigningMiddleware(stack)
 	if err != nil {
 		return err
 	}
diff --git a/service/polly/api_client.go b/service/polly/api_client.go
index a3dacb3ee57..cac7587039d 100644
--- a/service/polly/api_client.go
+++ b/service/polly/api_client.go
@@ -647,7 +647,7 @@ func (c presignConverter) convertToPresignMiddleware(stack *middleware.Stack, op
 	if err != nil {
 		return err
 	}
-	err = presignedurlcust.AddAsIsPresigingMiddleware(stack)
+	err = presignedurlcust.AddAsIsPresigningMiddleware(stack)
 	if err != nil {
 		return err
 	}
diff --git a/service/rds/api_client.go b/service/rds/api_client.go
index 743a8ede6c2..3a550407da8 100644
--- a/service/rds/api_client.go
+++ b/service/rds/api_client.go
@@ -643,7 +643,7 @@ func (c presignConverter) convertToPresignMiddleware(stack *middleware.Stack, op
 	if err != nil {
 		return err
 	}
-	err = presignedurlcust.AddAsIsPresigingMiddleware(stack)
+	err = presignedurlcust.AddAsIsPresigningMiddleware(stack)
 	if err != nil {
 		return err
 	}
diff --git a/service/s3/api_client.go b/service/s3/api_client.go
index 1195e440ec6..a31c2e0acf4 100644
--- a/service/s3/api_client.go
+++ b/service/s3/api_client.go
@@ -852,7 +852,7 @@ func (c presignConverter) convertToPresignMiddleware(stack *middleware.Stack, op
 	if err != nil {
 		return err
 	}
-	err = presignedurlcust.AddAsIsPresigingMiddleware(stack)
+	err = presignedurlcust.AddAsIsPresigningMiddleware(stack)
 	if err != nil {
 		return err
 	}
diff --git a/service/sts/api_client.go b/service/sts/api_client.go
index 8b38a505ccf..4d18dc86bd7 100644
--- a/service/sts/api_client.go
+++ b/service/sts/api_client.go
@@ -643,7 +643,7 @@ func (c presignConverter) convertToPresignMiddleware(stack *middleware.Stack, op
 	if err != nil {
 		return err
 	}
-	err = presignedurlcust.AddAsIsPresigingMiddleware(stack)
+	err = presignedurlcust.AddAsIsPresigningMiddleware(stack)
 	if err != nil {
 		return err
 	}