diff --git a/ci/run-build-and-tests.sh b/ci/run-build-and-tests.sh
index 8ebff42596..1ea8909c6f 100755
--- a/ci/run-build-and-tests.sh
+++ b/ci/run-build-and-tests.sh
@@ -53,4 +53,8 @@ then
 fi
 check_unignored_build_artifacts
 
+case " $MAKE_TARGETS " in
+*" all "*) make -C contrib/subtree test;;
+esac
+
 save_good_tree
diff --git a/ci/run-test-slice.sh b/ci/run-test-slice.sh
index a3c67956a8..2f2dbea25b 100755
--- a/ci/run-test-slice.sh
+++ b/ci/run-test-slice.sh
@@ -15,4 +15,7 @@ group "Run tests" make --quiet -C t T="$(cd t &&
 	tr '\n' ' ')" ||
 handle_failed_tests
 
+# Run the git subtree tests only if main tests succeeded
+test 0 != "$1" || make -C contrib/subtree test
+
 check_unignored_build_artifacts