diff --git a/.github/workflows/library_interop_tests.yml b/.github/workflows/library_interop_tests.yml
index ee3c1f67b..14139632c 100644
--- a/.github/workflows/library_interop_tests.yml
+++ b/.github/workflows/library_interop_tests.yml
@@ -46,6 +46,7 @@ jobs:
         run: |
           git submodule update --init libraries
           git submodule update --init --recursive mpl
+          git submodule update --init smithy-dafny
           
       - name: Configure AWS Credentials
         uses: aws-actions/configure-aws-credentials@v4