diff --git a/.github/workflows/check-javascript-style.yml b/.github/workflows/check-javascript-style.yml
index 974501a1114..d70350ae2a6 100644
--- a/.github/workflows/check-javascript-style.yml
+++ b/.github/workflows/check-javascript-style.yml
@@ -28,7 +28,7 @@ jobs:
       - name: Install Node modules
         run: |
           cd web
-          yarn install
+          yarn install --immutable
 
       - name: Run the linter
         run: |
diff --git a/.github/workflows/run-feature-tests-epas.yml b/.github/workflows/run-feature-tests-epas.yml
index 3d0442aa8d7..8ed22316800 100644
--- a/.github/workflows/run-feature-tests-epas.yml
+++ b/.github/workflows/run-feature-tests-epas.yml
@@ -150,7 +150,7 @@ jobs:
       - name: Build the JS bundle
         run: |
           cd web
-          yarn install
+          yarn install --immutable
           yarn run bundle
 
       - name: Run the tests
diff --git a/.github/workflows/run-feature-tests-pg.yml b/.github/workflows/run-feature-tests-pg.yml
index 90900ced5d0..93e163cb665 100644
--- a/.github/workflows/run-feature-tests-pg.yml
+++ b/.github/workflows/run-feature-tests-pg.yml
@@ -160,7 +160,7 @@ jobs:
       - name: Build the JS bundle
         run: |
           cd web
-          yarn install
+          yarn install --immutable
           yarn run bundle
 
       - name: Run the tests
diff --git a/.github/workflows/run-javascript-tests.yml b/.github/workflows/run-javascript-tests.yml
index 6648aafc42e..9a990c7ee83 100644
--- a/.github/workflows/run-javascript-tests.yml
+++ b/.github/workflows/run-javascript-tests.yml
@@ -37,7 +37,7 @@ jobs:
       - name: Install Node modules
         run: |
           cd web
-          yarn install
+          yarn install --immutable
 
       - name: Run the tests
         run: |