diff --git a/.github/workflows/build_test.yaml b/.github/workflows/build_test.yaml
index f61d7e3..3e1e0fe 100644
--- a/.github/workflows/build_test.yaml
+++ b/.github/workflows/build_test.yaml
@@ -5,6 +5,7 @@ name: build test
 jobs:
   ci:
     runs-on: ubuntu-latest
+    timeout-minutes: 20
     strategy:
       matrix:
         rust: