diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index abcf2cd..da336b1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -37,5 +37,15 @@ jobs:
           node-version: 22
           cache: pnpm
 
+      - name: Cache Cypress binary
+        uses: actions/cache@v4
+        with:
+          path: ~/.cache/Cypress
+          key: cypress-${{ runner.os }}-${{ hashFiles('pnpm-lock.yaml') }}
+
       - run: pnpm install --frozen-lockfile
+      # pnpm install doesn't reliably trigger Cypress's postinstall binary
+      # download (see apps/web's cypress caveat in the README) — install it
+      # explicitly so `cypress run` finds it.
+      - run: pnpm --filter web exec cypress install
       - run: pnpm --filter web e2e