diff --git a/.github/workflows/golangci-lint.yml b/.github/workflows/pr-lint.yml
similarity index 53%
rename from .github/workflows/golangci-lint.yml
rename to .github/workflows/pr-lint.yml
index 18d2515b..1ec7a051 100644
--- a/.github/workflows/golangci-lint.yml
+++ b/.github/workflows/pr-lint.yml
@@ -5,7 +5,7 @@ permissions:
   contents: read
 jobs:
   golangci:
-    name: lint
+    name: golangci lint
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
@@ -17,3 +17,12 @@ jobs:
         with:
           version: latest
           args: --timeout=5m
+  buf-breaking:
+    name: incompatible proto changes
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: bufbuild/buf-setup-action@v1
+      - uses: bufbuild/buf-breaking-action@v1
+        with:
+          against:  "https://github.com/Snowflake-Labs/sansshell.git#branch=main"