diff --git a/.github/actions/run-backend-tests/action.yml b/.github/actions/run-backend-tests/action.yml
index 9109dfc4eb9de7..ff331a95979ab3 100644
--- a/.github/actions/run-backend-tests/action.yml
+++ b/.github/actions/run-backend-tests/action.yml
@@ -60,7 +60,7 @@ runs:
         - name: Install SAML (python3-saml) dependencies
           shell: bash
           run: |
-              sudo apt-get update && sudo apt-get install libxml2-dev libxmlsec1-dev libxmlsec1-openssl
+              sudo apt-get update && sudo apt-get install libxml2-dev libxmlsec1-dev libxmlsec1-openssl libantlr4-runtime-dev
 
         - uses: syphar/restore-virtualenv@v1
           id: cache-backend-tests