diff --git a/.github/workflows/pull_requests.yml b/.github/workflows/pull_requests.yml
index 54543d0..9314cd4 100644
--- a/.github/workflows/pull_requests.yml
+++ b/.github/workflows/pull_requests.yml
@@ -8,6 +8,8 @@ jobs:
   tests:
     name: Tests
     uses: ./.github/workflows/tests.yml
+    secrets:
+      codecov_token: ${{ secrets.CODECOV_TOKEN }}
 
   linters:
     name: Linters
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 12e5cbe..4cffd6a 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -1,5 +1,8 @@
 on:
   workflow_call:
+    secrets:
+      codecov_token:
+        required: true
 
 name: "Tests"
 
@@ -45,7 +48,8 @@ jobs:
         uses: actions/download-artifact@v3
         with:
           name: test-coverage
-      - uses: codecov/codecov-action@v3
+      - uses: codecov/codecov-action@v4
         with:
           fail_ci_if_error: true
           verbose: true
+          token: ${{ secrets.codecov_token }}