diff --git a/.github/workflows/validate-proto.yml b/.github/workflows/validate-proto.yml
new file mode 100644
index 000000000..36505985b
--- /dev/null
+++ b/.github/workflows/validate-proto.yml
@@ -0,0 +1,25 @@
+name: Validate GTFS-realtime .proto file
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up JDK 1.8
+      uses: actions/setup-java@v1
+      with:
+        java-version: 1.8
+        server-id: github # Value of the distributionManagement/repository/id field of the pom.xml
+        settings-path: ${{ github.workspace }} # location for the settings.xml file
+    - name: Install Protoc
+      uses: arduino/setup-protoc@master
+    - name: Compile Java bindings
+      run: protoc --java_out=gtfs-realtime/proto gtfs-realtime/proto/gtfs-realtime.proto