diff --git a/.cirrus.yml b/.cirrus.yml
index 1c25ee1668133..998b9e1f513fc 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -56,7 +56,7 @@ base_template: &BASE_TEMPLATE
                                # Also, the merge commit is used to lint COMMIT_RANGE="HEAD~..HEAD"
 
 main_template: &MAIN_TEMPLATE
-  timeout_in: 120m  # https://cirrus-ci.org/faq/#instance-timed-out
+  timeout_in: 180m  # https://cirrus-ci.org/faq/#instance-timed-out
   ci_script:
     - ./ci/test_run_all.sh
 
@@ -149,7 +149,7 @@ task:
   persistent_worker:
     labels:
       type: medium
-  timeout_in: 300m  # Use longer timeout for the *rare* case where a full build (llvm + msan + depends + ...) needs to be done.
+  timeout_in: 500m  # Use longer timeout for the *rare* case where a full build (llvm + msan + depends + ...) needs to be done.
   env:
     FILE_ENV: "./ci/test/00_setup_env_native_msan.sh"