diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index 075abb2a..061b0775 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -20,7 +20,7 @@ jobs:
   coverage:
     runs-on:
       group: runners-intel
-    container: libfn/ci-build-gcc:14
+    container: libfn/ci-build-gcc:15
     strategy:
       fail-fast: false
     env:
@@ -57,7 +57,10 @@ jobs:
       env:
         CMAKE_GENERATOR: Ninja
         CMAKE_BUILD_TYPE: Debug
-        COVERAGE_OPTS: "-g --coverage -fprofile-abs-path -fno-early-inlining"
+        COVERAGE_OPTS: >-
+          -g --coverage -fprofile-abs-path -fprofile-update=atomic -funreachable-traps
+          -fno-early-inlining -fno-aggressive-loop-optimizations
+          -fno-peephole -fno-unit-at-a-time -fno-unroll-loops
       run: |
         mkdir .build
         cd .build