diff --git a/.github/actions/version-bump-pr/action.yml b/.github/actions/version-bump-pr/action.yml
new file mode 100644
index 00000000..0970213a
--- /dev/null
+++ b/.github/actions/version-bump-pr/action.yml
@@ -0,0 +1,67 @@
+name: Post release downstream version bump
+description: Creates a version bump PR of repo tools in the specified downstream repo
+
+inputs:
+  repo:
+    description: Downstream repo name
+    required: true
+  version:
+    description: Repo tools version for pull request
+    required: true
+  pat:
+    description: A GitHub personal access token used to authenticate the requests in this action
+    required: true
+
+runs:
+  using: composite
+  steps:
+    - name: Checkout SDK
+      uses: actions/checkout@v4
+      with:
+        repository: ${{ inputs.repo }}
+        path: ${{ inputs.repo }}
+        token: ${{ inputs.pat }}
+
+    - name: Create pull request
+      shell: bash
+      env:
+        REPO: ${{ inputs.repo }}
+        NEW_VERSION: ${{ inputs.version }}
+        GH_TOKEN: ${{ inputs.pat }}
+      run: |
+        BRANCH=repo-tools-$NEW_VERSION
+        
+        cd $REPO
+        echo "Creating branch: $BRANCH"
+        git checkout -b $BRANCH
+        
+        echo "Configuring git"
+        git config user.name aws-sdk-kotlin-ci
+        git config user.email "aws-kotlin-sdk-automation@amazon.com"
+        
+        echo "Modifying version catalog to use repo tools $NEW_VERSION"
+        sed -i "s/aws-kotlin-repo-tools-version = .*/aws-kotlin-repo-tools-version = \"$NEW_VERSION\"/" gradle/libs.versions.toml
+        
+        echo "Modified version catalog:"
+        cat gradle/libs.versions.toml
+        
+        echo "Commiting modifications"
+        git add gradle/libs.versions.toml
+        git commit -m "misc: repo tools v$NEW_VERSION"
+        
+        echo "Pushing changes upstream"
+        git push --force --set-upstream origin $BRANCH
+        
+        EXISTING_PR=$(gh pr list --head "$BRANCH" --state open --json number -q '.[0].number')
+        
+        if [ -z "$EXISTING_PR" ]; then
+          echo "Creating pull request" 
+          PR_URL=$(gh pr create --title "misc: repo tools v$NEW_VERSION" --body "Bumps repo tools to v$NEW_VERSION")
+          echo "Pull request created: $PR_URL"
+          
+          echo "Adding no-changelog label"
+          PR_NUMBER=$(basename $PR_URL)
+          gh pr edit $PR_NUMBER --add-label "no-changelog"
+        else 
+          echo "::warning::Existing pull request found: $EXISTING_PR"
+        fi
diff --git a/.github/workflows/run-release.yml b/.github/workflows/run-release.yml
index ce98ea3f..46518ec2 100644
--- a/.github/workflows/run-release.yml
+++ b/.github/workflows/run-release.yml
@@ -7,11 +7,21 @@ on:
         type: string
         required: false
         description: 'Optionally specify a custom release version (minor version bump e.g.)'
-      kn-release:
+      sdk-version-bump:
         type: boolean
         required: false
         default: false
-        description: 'Whether the release is a KN variant of repo tools or not'
+        description: 'Whether to create an SDK version bump pull request for this release'
+      smithy-kotlin-version-bump:
+        type: boolean
+        required: false
+        default: false
+        description: 'Whether to create a Smithy Kotlin version bump pull request for this release'
+      crt-kotlin-version-bump:
+        type: boolean
+        required: false
+        default: false
+        description: 'Whether to create a CRT Kotlin version bump pull request for this release'
 
 permissions:
   id-token: write
@@ -35,11 +45,7 @@ jobs:
             exit 0
           fi
           
-          if [ "${{ inputs.kn-release }}" == "true" ]; then
-            CURRENT_VERSION=$(git tag --sort=-creatordate | grep -- '-kn$' | head -n 1)
-          else
-            CURRENT_VERSION=$(git tag --sort=-creatordate | grep -v -- '-kn$' | head -n 1)
-          fi
+          CURRENT_VERSION=$(git tag --sort=-creatordate | head -n 1)
           
           IFS='.' read -r MAJOR MINOR PATCH <<< "$CURRENT_VERSION"
           PATCH_NUMBER=${PATCH%%[^0-9]*}
@@ -63,12 +69,37 @@ jobs:
           aws-region: us-west-2
 
       - name: Run codebuild release job
+        id: release-job
         uses: aws-actions/aws-codebuild-run-build@v1
         with:
           project-name: publish-aws-kotlin-repo-tools
           source-version-override: ${{ steps.resolve-new-version.outputs.NEW_VERSION }}
 
+      - name: AWS SDK Kotlin pull request
+        if: ${{ inputs.sdk-version-bump == 'true' }}
+        uses: ./.github/actions/version-bump-pr
+        with:
+          repo: 'aws/aws-sdk-kotlin'
+          version: ${{ steps.resolve-new-version.outputs.NEW_VERSION }}
+          pat: ${{ secrets.CI_USER_PAT }}
+
+      - name: Smithy Kotlin pull request
+        if: ${{ inputs.smithy-kotlin-version-bump == 'true' }}
+        uses: ./.github/actions/version-bump-pr
+        with:
+          repo: 'smithy-lang/smithy-kotlin'
+          version: ${{ steps.resolve-new-version.outputs.NEW_VERSION }}
+          pat: ${{ secrets.CI_USER_PAT }}
+
+      - name: CRT Kotlin pull request
+        if: ${{ inputs.crt-kotlin-version-bump == 'true' }}
+        uses: ./.github/actions/version-bump-pr
+        with:
+          repo: 'aws/aws-crt-kotlin'
+          version: ${{ steps.resolve-new-version.outputs.NEW_VERSION }}
+          pat: ${{ secrets.CI_USER_PAT }}
+
       - name: Delete failed release tag
-        if: ${{ failure() }}
+        if: ${{ failure() && steps.release-job.outcome != 'success' }}
         run: |
           git push --delete origin ${{ steps.resolve-new-version.outputs.NEW_VERSION }}