diff --git a/.github/workflows/ts-integrity-check.yml b/.github/workflows/ts-integrity-check.yml
index 5a4b8700..05bb2c48 100644
--- a/.github/workflows/ts-integrity-check.yml
+++ b/.github/workflows/ts-integrity-check.yml
@@ -13,6 +13,10 @@ on:
 
 jobs:
   security-audit:
+    defaults:
+      run:
+        working-directory: impls/ts
+        shell: bash
     runs-on: ubuntu-latest
     steps:
       - name: Checkout source
@@ -27,6 +31,10 @@ jobs:
         run: npm audit
 
   test-with-node:
+    defaults:
+      run:
+        working-directory: impls/ts
+        shell: bash
     runs-on: ubuntu-latest
     steps:
       - name: Checkout source