diff --git a/.github/workflows/pull_request.yml b/.github/workflows/pull_request.yml
index 93b2164d937d0f2e027e09dc6367eb1cf5023961..edf5f3b4c1bfe9198c261550187da078be12cc00 100644
--- a/.github/workflows/pull_request.yml
+++ b/.github/workflows/pull_request.yml
@@ -10,9 +10,6 @@ jobs:
   test:
     name: test
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        go: ['1.18']
     steps:
     - uses: actions/checkout@v2
     - name: Set up Go
diff --git a/.github/workflows/pull_request_e2e.yml b/.github/workflows/pull_request_e2e.yml
index d34adea615994fed017d85e4882349ce253acd04..4fcb420703ed6ab677e697d3fbf750fabf7ba15c 100644
--- a/.github/workflows/pull_request_e2e.yml
+++ b/.github/workflows/pull_request_e2e.yml
@@ -11,16 +11,13 @@ jobs:
   e2e-tests:
     name: e2e-tests
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        go: ['1.18']
     steps:
     - name: install make
       run: sudo apt-get install make
     - name: set up go 1.x
       uses: actions/setup-go@v2
       with:
-        go-version: ${{ matrix.go }}
+        go-version: 1.18
     - name: checkout
       uses: actions/checkout@v2
     - name: run end-to-end tests