diff --git a/.forgejo/workflows/ci.yml b/.forgejo/workflows/ci.yml
index b686993..6b16a75 100644
--- a/.forgejo/workflows/ci.yml
+++ b/.forgejo/workflows/ci.yml
@@ -61,12 +61,13 @@ jobs:
           rustup component add clippy
           bun --version && cargo --version
           bun install --frozen-lockfile
-      # Playwright's Chromium and headless shell (~280 MB), keyed by the locked playwright version; the system
-      # libraries and fonts (--with-deps) are installed on every run, the job container starts clean
+      # Playwright's Chromium and headless shell (~280 MB), keyed by the browser builds the installed playwright-core
+      # wants (its browsers.json); the system libraries and fonts (--with-deps) are installed on every run, the job
+      # container starts clean
       - uses: actions/cache@v4
         with:
           path: ~/.cache/ms-playwright
-          key: playwright-${{ runner.os }}-${{ hashFiles('bun.lock') }}
+          key: playwright-${{ runner.os }}-${{ hashFiles('node_modules/playwright-core/browsers.json') }}
           restore-keys: playwright-${{ runner.os }}-
       # the job runs as root in a container: storebound adds --no-sandbox to the Chromium it starts itself there
       # (cli/shots/browser.ts sandboxArgs), Playwright's own launches already pass it