diff --git a/.github/workflows/CI-unixish.yml b/.github/workflows/CI-unixish.yml
index 4a38b1f..8c28049 100644
--- a/.github/workflows/CI-unixish.yml
+++ b/.github/workflows/CI-unixish.yml
@@ -58,8 +58,7 @@ jobs:
       if: matrix.os == 'ubuntu-24.04'
       run: |
           make clean
-          # this valgrind version doesn't support DWARF 5 yet
-          make -j$(nproc) CXXFLAGS="-gdwarf-4"
+          make -j$(nproc)
           valgrind --leak-check=full --num-callers=50 --show-reachable=yes --track-origins=yes --gen-suppressions=all --error-exitcode=42 ./testrunner
           valgrind --leak-check=full --num-callers=50 --show-reachable=yes --track-origins=yes --gen-suppressions=all --error-exitcode=42 ./simplecpp simplecpp.cpp -e