diff --git a/.github/workflows/artifacts_build_deploy.yml b/.github/workflows/artifacts_build_deploy.yml
index 24de26309f..4f67d50e67 100644
--- a/.github/workflows/artifacts_build_deploy.yml
+++ b/.github/workflows/artifacts_build_deploy.yml
@@ -33,7 +33,7 @@ jobs:
   osx_job:
     needs: prepare_build
     if: ${{ needs.prepare_build.outputs.TAG_CREATED == 'true' }}
-    runs-on: macOS-12
+    runs-on: macOS-14
     timeout-minutes: 90
     strategy:
       matrix:
diff --git a/.github/workflows/unit_tests.yml b/.github/workflows/unit_tests.yml
index 6a05626f9f..47fb08abf9 100644
--- a/.github/workflows/unit_tests.yml
+++ b/.github/workflows/unit_tests.yml
@@ -16,7 +16,7 @@ jobs:
       BUILD_TYPE: ${{ matrix.RELEASE && 'RelWithDebInfo' || 'Debug' }}
       TEST_USE_ROCKSDB: ${{ matrix.BACKEND == 'rocksdb' && '1' || '0' }}
       DEADLINE_SCALE_FACTOR: ${{ matrix.BACKEND == 'rocksdb' && '2' || '1' }}
-    runs-on: macos-12
+    runs-on: macos-14
     if: github.event_name == 'push' || github.event.pull_request.head.repo.full_name != github.repository
     steps:
       - name: Checkout
diff --git a/nano/core_test/timer.cpp b/nano/core_test/timer.cpp
index cf718f11bd..85b3040739 100644
--- a/nano/core_test/timer.cpp
+++ b/nano/core_test/timer.cpp
@@ -39,7 +39,7 @@ TEST (timer, measure_and_compare)
 	std::this_thread::sleep_for (50ms);
 	ASSERT_TRUE (t1.after_deadline (30ms));
 	ASSERT_TRUE (t1.before_deadline (500ms));
-	ASSERT_LT (t1.since_start (), 200ms);
+	ASSERT_LT (t1.since_start (), 500ms);
 	ASSERT_GT (t1.since_start (), 10ms);
 	ASSERT_GE (t1.stop (), 50ms);
 	std::this_thread::sleep_for (50ms);