diff --git a/.github/workflows/ci_bootstrapping_works.yml b/.github/workflows/ci_bootstrapping_works.yml
index 8926d2dcf0..3187aed2cd 100644
--- a/.github/workflows/ci_bootstrapping_works.yml
+++ b/.github/workflows/ci_bootstrapping_works.yml
@@ -11,7 +11,7 @@ on:
 jobs:
   ubuntu:
     runs-on: ubuntu-20.04
-    timeout-minutes: 15
+    timeout-minutes: 30
     env:
       VFLAGS: -cc tcc -no-retry-compilation
       B_CFLAGS: -g -std=gnu11 -I ./thirdparty/stdatomic/nix -w
@@ -49,7 +49,7 @@ jobs:
 
   macos:
     runs-on: macos-11
-    timeout-minutes: 15
+    timeout-minutes: 30
     env:
       VFLAGS: -cc clang
       B_CFLAGS: -g -std=gnu11 -I ./thirdparty/stdatomic/nix -w