diff --git a/.github/workflows/continuous-integration.yml b/.github/workflows/continuous-integration.yml
index cc8e0ad..3b63a20 100644
--- a/.github/workflows/continuous-integration.yml
+++ b/.github/workflows/continuous-integration.yml
@@ -1,11 +1,16 @@
 name: "Continuous Integration"
 
 on:
+  # Trigger only on pushes to master, or pull requests to master
   push:
+    branches:
+      - master
     paths-ignore:
       - '**.md'
       - 'img/**'
   pull_request:
+    branches:
+      - master
     paths-ignore:
       - '**.md'
       - 'img/**'
@@ -16,8 +21,6 @@ jobs:
   tests:
     name: "CI"
     runs-on: ${{ matrix.os }}
-    # We want to run on external PRs, but not on our own internal PRs as they'll be run by the push to the branch.
-    if: ${{ !(github.event_name == 'pull_request' && github.event.pull_request.head.repo.full_name == github.repository) }}
 
     strategy:
       matrix:
@@ -78,8 +81,6 @@ jobs:
   test-vcs:
     name: "Test VCS"
     runs-on: ubuntu-latest
-    # We want to run on external PRs, but not on our own internal PRs as they'll be run by the push to the branch.
-    if: ${{ !(github.event_name == 'pull_request' && github.event.pull_request.head.repo.full_name == github.repository) }}
 
     strategy:
       matrix:
@@ -154,7 +155,10 @@ jobs:
       - name: "List all coverage reports"
         run: echo coverage_reports=./coverage/$(ls -m coverage/ | sed "s/, */,.\/coverage\//g") >> $GITHUB_ENV
 
-      - uses: codecov/codecov-action@v4
+      - name: "Upload coverage to Codecov"
+        uses: codecov/codecov-action@v4
+        # No need to run this step on forks.
+        if: ${{ 'bmitch/churn-php' == github.repository }}
         with:
           files: ./coverage.xml,${{ env.coverage_reports }}
           fail_ci_if_error: true
@@ -165,8 +169,6 @@ jobs:
   analysis:
     name: "Static Analysis"
     runs-on: ubuntu-latest
-    # We want to run on external PRs, but not on our own internal PRs as they'll be run by the push to the branch.
-    if: ${{ !(github.event_name == 'pull_request' && github.event.pull_request.head.repo.full_name == github.repository) }}
 
     steps:
       - name: "Checkout"