diff --git a/prometheus_client/decorator.py b/prometheus_client/decorator.py
index 1ad2c977..b965629c 100644
--- a/prometheus_client/decorator.py
+++ b/prometheus_client/decorator.py
@@ -193,7 +193,7 @@ def make(self, src_templ, evaldict=None, addsource=False, **attrs):
         try:
             code = compile(src, filename, 'single')
             exec(code, evaldict)
-        except:
+        except BaseException:
             print('Error in generated code:', file=sys.stderr)
             print(src, file=sys.stderr)
             raise