diff --git a/setup.py b/setup.py
index c318749..f0a1884 100755
--- a/setup.py
+++ b/setup.py
@@ -61,14 +61,25 @@ else:
 
 def should_compile_ext_mod():
     try:
-        import ctypes
-        import ctypes.util
-    except:
+        if sys.hexversion >= 0x03030000:
+            from unittest.mock import patch
+            with patch('subprocess.Popen'):
+                import ctypes
+                import ctypes.util
+        else:
+            import ctypes
+            import ctypes.util
+
+    except OSError:
         return True
 
     libc_name = None
     try:
-        libc_name = ctypes.util.find_library('c')
+        if sys.hexversion >= 0x03030000:
+            with patch('subprocess.Popen'):
+                libc_name = ctypes.util.find_library('c')
+        else:
+            libc_name = ctypes.util.find_library('c')
     except:
         pass  # Will attemp to load it with None anyway.