diff --git a/.changelog/21085.txt b/.changelog/21085.txt
new file mode 100644
index 00000000000..743edc222af
--- /dev/null
+++ b/.changelog/21085.txt
@@ -0,0 +1,7 @@
+```release-note:bug
+resource/aws_dx_connection: Mark `provider_name` as Computed to avoid resource recreation with pre-v3.56.0 configurations
+```
+
+```release-note:bug
+resource/aws_dx_lag: Mark `provider_name` as Computed to avoid resource recreation with pre-v3.56.0 configurations
+```
\ No newline at end of file
diff --git a/aws/resource_aws_dx_connection.go b/aws/resource_aws_dx_connection.go
index b5d98004733..6f8212a0e4d 100644
--- a/aws/resource_aws_dx_connection.go
+++ b/aws/resource_aws_dx_connection.go
@@ -65,6 +65,7 @@ func resourceAwsDxConnection() *schema.Resource {
 			"provider_name": {
 				Type:     schema.TypeString,
 				Optional: true,
+				Computed: true,
 				ForceNew: true,
 			},
 			"tags":     tagsSchema(),
diff --git a/aws/resource_aws_dx_lag.go b/aws/resource_aws_dx_lag.go
index 11cdbafe44f..1ce690a48a5 100644
--- a/aws/resource_aws_dx_lag.go
+++ b/aws/resource_aws_dx_lag.go
@@ -65,6 +65,7 @@ func resourceAwsDxLag() *schema.Resource {
 			"provider_name": {
 				Type:     schema.TypeString,
 				Optional: true,
+				Computed: true,
 				ForceNew: true,
 			},
 			"tags":     tagsSchema(),