diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d816687ca..dbb718cc8 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -118,7 +118,7 @@ jobs:
       run: |
         git_hash=$(git rev-parse --short "$GITHUB_SHA")
         git_branch=${GITHUB_REF#refs/heads/}
-        sed -i -E 's/version: "(.*)"/version: "$git_branch $git_hash"/g' src-ui/src/environments/environment.prod.ts
+        sed -i -E "s/version: \"(.*)\"/version: \"${git_branch} ${git_hash}\"/g" src-ui/src/environments/environment.prod.ts
     -
       name: Build frontend
       run: ./compile-frontend.sh