diff --git a/psycopg2da/__init__.py b/psycopg2da/__init__.py
index e69de29b..fa81adaf 100644
--- a/psycopg2da/__init__.py
+++ b/psycopg2da/__init__.py
@@ -0,0 +1 @@
+# empty file
diff --git a/psycopg2da/adapter.py b/psycopg2da/adapter.py
index 352afc2a..dc796008 100644
--- a/psycopg2da/adapter.py
+++ b/psycopg2da/adapter.py
@@ -379,11 +379,7 @@ def _handle_psycopg_exception(error):
     # PostgreSQL releases - if so, the different messages should be added
     # rather than the existing ones changed so this logic works with
     # different versions.
-    if msg.startswith(
-            'ERROR:  could not serialize access due to concurrent update'
-            ):
-        raise Retry(sys.exc_info())
-    if msg.startswith('ERROR:  deadlock detected'):
+    if 'could not serialize' in msg or 'deadlock detected' in msg:
         raise Retry(sys.exc_info())
     raise