diff --git a/jc/exceptions.py b/jc/exceptions.py
index f7dd2571..32218db6 100644
--- a/jc/exceptions.py
+++ b/jc/exceptions.py
@@ -3,3 +3,7 @@
 
 class ParseError(Exception):
     pass
+
+
+class LibraryNotInstalled(Exception):
+    pass