diff --git a/.github/workflows/merge_build.yml b/.github/workflows/merge_build.yml
index 3cc5f8c6d..09aa7ca4b 100644
--- a/.github/workflows/merge_build.yml
+++ b/.github/workflows/merge_build.yml
@@ -8,6 +8,7 @@ on:
 
 jobs:
   Build:
+    timeout-minutes: 268 # equal to max + 3*std of the last 2500 successful runs
     strategy:
       fail-fast: false
       matrix: