diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 37b394f1..57a2e6bc 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -17,7 +17,7 @@ jobs:
         with:
           node-version: 18
           cache: yarn
-      - run: yarn install
+      - run: yarn install --frozen-lockfile
       - run: yarn lint
   build:
     needs: lint
@@ -68,6 +68,6 @@ jobs:
         with:
           node-version: ${{ matrix.node }}
           cache: yarn
-      - run: yarn install
+      - run: yarn install --frozen-lockfile
       # TODO(bmc): get ssl tests working in ci
       - run: yarn test