diff --git a/library/compiler-builtins/libm/.github/workflows/main.yaml b/library/compiler-builtins/libm/.github/workflows/main.yaml
index 2b2891ab2261..c925e63aa59b 100644
--- a/library/compiler-builtins/libm/.github/workflows/main.yaml
+++ b/library/compiler-builtins/libm/.github/workflows/main.yaml
@@ -261,7 +261,7 @@ jobs:
       - clippy
       - calculate_extensive_matrix
     runs-on: ubuntu-24.04
-    timeout-minutes: 180
+    timeout-minutes: 240 # 4 hours
     strategy:
       matrix:
         # Use the output from `calculate_extensive_matrix` to calculate the matrix