diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7bdd20d20..83b254ebd 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -128,6 +128,8 @@ jobs:
       - uses: actions/checkout@v6
 
       - uses: denoland/setup-deno@v2
+        with:
+          deno-version: v2.7.14
 
       - uses: taiki-e/install-action@v2
         with:
diff --git a/dockerfiles/Dockerfile-gui-tests b/dockerfiles/Dockerfile-gui-tests
index 28c31be73..cb83e4fcf 100644
--- a/dockerfiles/Dockerfile-gui-tests
+++ b/dockerfiles/Dockerfile-gui-tests
@@ -26,6 +26,7 @@ RUN apt-get install -y --no-install-recommends \
   libasound2 \
   libatk1.0-0 \
   libatk-bridge2.0-0 \
+  chromium \
   libc6 \
   libcairo2 \
   libcups2 \
@@ -68,6 +69,8 @@ RUN mkdir out
 
 COPY ../package.json /build/package.json
 
+ENV PUPPETEER_EXECUTABLE_PATH=/usr/bin/chromium
+
 # For now, we need to use `--unsafe-perm=true` to go around an issue when npm tries
 # to create a new folder. For reference:
 # https://github.com/puppeteer/puppeteer/issues/375