diff --git a/docs/releases.rst b/docs/releases.rst
index 981cd8856..2dd703dce 100644
--- a/docs/releases.rst
+++ b/docs/releases.rst
@@ -28,3 +28,4 @@ Release Notes
    releases/5_4
    releases/5_5
    releases/6_0
+   releases/6_1
diff --git a/pvactools/lib/output_parser.py b/pvactools/lib/output_parser.py
index 56fc86d80..14f77dd17 100644
--- a/pvactools/lib/output_parser.py
+++ b/pvactools/lib/output_parser.py
@@ -210,9 +210,8 @@ def match_wildtype_and_mutant_entry_for_missense(self, result, mt_position, wt_r
         mt_epitope_seq = result['mt_epitope_seq']
         try:
             wt_result      = wt_results[match_position]
-        except:
-            import pdb
-            pdb.set_trace()
+        except KeyError:
+            raise KeyError(f"No wildtype result found at position {match_position} for MT epitope {mt_epitope_seq}")
         wt_epitope_seq = wt_result['wt_epitope_seq']
         result['wt_epitope_position'] = match_position
         total_matches  = self.determine_total_matches(mt_epitope_seq, wt_epitope_seq)