diff --git a/.github/workflows/ci-ubuntu.yml b/.github/workflows/ci-ubuntu.yml
index b2086bf7d..6a3e208c8 100644
--- a/.github/workflows/ci-ubuntu.yml
+++ b/.github/workflows/ci-ubuntu.yml
@@ -30,7 +30,7 @@ jobs:
           sudo apt-get install liblzma5 libjbig0 libgtk-3-dev
 
       - name: Install gcc, lcov, gdb, theme-icon
-        # gcov uses similar version, see build-gen.sh -c
+        # gcov version should match gcc version: change build-gen.sh as well
         run: sudo apt-get install -yq gcc-13 g++-13 lcov gdb yaru-theme-icon
 
       - name: Install xvfb to allow headless tests
diff --git a/build-gen.sh b/build-gen.sh
index 9ff921d37..15bce89f3 100755
--- a/build-gen.sh
+++ b/build-gen.sh
@@ -63,7 +63,7 @@ while getopts ":B:d:D:G:abcghilopstT" opt; do
 
     c)
       # see ci-ubuntu.yml
-      option_coverage="-DCMAKE_BUILD_TYPE=Coverage -DwexGCOV=gcov-12"
+      option_coverage="-DCMAKE_BUILD_TYPE=Coverage -DwexGCOV=gcov-13"
     ;;
 
     d)