diff --git a/lib/jwt/decode.rb b/lib/jwt/decode.rb
index 6282e946..c44f755f 100644
--- a/lib/jwt/decode.rb
+++ b/lib/jwt/decode.rb
@@ -92,8 +92,8 @@ def signing_input
     end
 
     def parse_and_decode(segment)
-      JSON.parse(JWT::Base64.url_decode(segment))
-    rescue JSON::ParserError
+      JWT::JSON.parse(JWT::Base64.url_decode(segment))
+    rescue ::JSON::ParserError
       raise JWT::DecodeError, 'Invalid segment encoding'
     end
   end