diff --git a/.github/workflows/requirements.txt b/.github/workflows/requirements.txt
index 2f24e0c..25238e5 100644
--- a/.github/workflows/requirements.txt
+++ b/.github/workflows/requirements.txt
@@ -1,4 +1,5 @@
-coverage ~=7.0
+coverage ~=6.0       ; python_version <  '3.7'
+coverage ~=7.0       ; python_version >= '3.7'
 cython ~=3.0
 wheel
 auditwheel
diff --git a/setup.py b/setup.py
index ac09f7a..74f6104 100644
--- a/setup.py
+++ b/setup.py
@@ -437,7 +437,7 @@ def build_extension(self, ext):
         # update compile flags if compiling in debug mode
         if self.debug:
             if self.compiler.compiler_type in {"unix", "cygwin", "mingw32"}:
-                ext.extra_compile_args.append("-Og")
+                ext.extra_compile_args.append("-g")
                 ext.extra_compile_args.append("--coverage")
                 ext.extra_link_args.append("--coverage")
             elif self.compiler.compiler_type == "msvc":