diff --git a/src/jupyter_contrib_nbextensions/nbconvert_support/js_highlight.py b/src/jupyter_contrib_nbextensions/nbconvert_support/js_highlight.py
index 0368b95..68ebd95 100644
--- a/src/jupyter_contrib_nbextensions/nbconvert_support/js_highlight.py
+++ b/src/jupyter_contrib_nbextensions/nbconvert_support/js_highlight.py
@@ -21,7 +21,7 @@ from traitlets import Unicode
 
 try:
     from html.parser import HTMLParser  # py3
-except:
+except ImportError:
     from HTMLParser import HTMLParser  # py2