diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index ef1924342d..6a5ce088fd 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -93,6 +93,8 @@ jobs:
     name: 'unit_back (node: ${{ matrix.node }})'
     needs: [changes, build]
     runs-on: ubuntu-latest
+    env:
+      YARN_ENABLE_IMMUTABLE_INSTALLS: false
     strategy:
       matrix:
         node: [18, 20]
diff --git a/packages/utils/pack-up/tests/spawn.ts b/packages/utils/pack-up/tests/spawn.ts
index 972cd7815f..9d247f99ce 100644
--- a/packages/utils/pack-up/tests/spawn.ts
+++ b/packages/utils/pack-up/tests/spawn.ts
@@ -100,7 +100,7 @@ const spawn = async (projectName: string): Promise<Project> => {
 
   return {
     cwd: tmpPath,
-    install: () => execute('yarn install --no-immutable'),
+    install: () => execute('yarn install'),
     remove: tmpRemove,
     run: (cmd: string) => execute(`yarn run ${cmd}`),
   };