diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 6a8912aa9b94bae00ec399297b3b634fc2e12ddb..3a9b6aca295679e1844b4b775acdb7b1b743dd72 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -2143,10 +2143,10 @@ coverage:
       - mkdir build
       - cd build
       - if dpkg --compare-versions `ompi_info | head -2 | tail -1 | sed 's/[^0-9.]*\([0-9.]*\).*/\1/'` ge 1.10; then export MPIEXEC_PREFLAGS="--allow-run-as-root" ; fi
-      - cmake .. -DWALBERLA_BUILD_TESTS=ON -DWALBERLA_BUILD_BENCHMARKS=ON -DWALBERLA_BUILD_TUTORIALS=ON -DWALBERLA_BUILD_WITH_MPI=ON -DWALBERLA_BUILD_WITH_OPENMP=OFF -DCMAKE_BUILD_TYPE=Debug -DMPIEXEC_PREFLAGS=$MPIEXEC_PREFLAGS -DWALBERLA_BUILD_WITH_CODEGEN=OFF -DWALBERLA_BUILD_WITH_GCOV=ON
+      - cmake .. -DWALBERLA_BUILD_TESTS=ON -DWALBERLA_BUILD_BENCHMARKS=ON -DWALBERLA_BUILD_TUTORIALS=ON -DWALBERLA_BUILD_WITH_MPI=ON -DWALBERLA_BUILD_WITH_OPENMP=OFF -DCMAKE_BUILD_TYPE=DebugOptimized -DMPIEXEC_PREFLAGS=$MPIEXEC_PREFLAGS -DWALBERLA_BUILD_WITH_CODEGEN=OFF -DWALBERLA_BUILD_WITH_GCOV=ON
       - cmake . -LA
       - make -j $NUM_BUILD_CORES -l $NUM_CORES
-      - ctest -LE longrun --output-on-failure -j $NUM_CORES --timeout 9000
+      - ctest -LE longrun --output-on-failure -j $NUM_CORES --timeout 3000
       - cd ..
       - mkdir coverage
       - pwd