diff --git a/.github/workflows/run-testsystem.yml b/.github/workflows/run-testsystem.yml
index 085e9ae..0a82a9e 100644
--- a/.github/workflows/run-testsystem.yml
+++ b/.github/workflows/run-testsystem.yml
@@ -29,7 +29,7 @@ jobs:
           # overwrite image path
           sed -i "s|ghcr.io/slub/dfg-viewer|ghcr.io/markusweigelt/dfg-viewer|g" .env
           # overwirte trusted host pattern config with ngrok url
-          sed -i "s|APP_T3_CONFIG_SYS_TRUSTEDHOSTSPATTERN=""|APP_T3_CONFIG_SYS_TRUSTEDHOSTSPATTERN="bear-genuine-hookworm\.ngrok-free\.app"|g" .env
+          sed -i "s|APP_T3_CONFIG_SYS_TRUSTEDHOSTSPATTERN=""|APP_T3_CONFIG_SYS_TRUSTEDHOSTSPATTERN=".*"|g" .env
 
       - name: Run DFG-Viewer using Docker Compose
         working-directory: dfg-viewer/Docker