diff --git a/NEWS.md b/NEWS.md
index 0b26f55..124f4f1 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,3 +1,6 @@
+0.23.1 (yyyy-mm-dd)
+* Fix `CDB_EstimateRowCount` parallelizability #333
+
 0.23.0 (2018-07-03)
 * Add a new helper function `_CDB_Table_Exists(table_name_with_optional_schema TEXT)` #332
 
diff --git a/scripts-available/CDB_EstimateRowCount.sql b/scripts-available/CDB_EstimateRowCount.sql
index 3b43014..d9cad80 100644
--- a/scripts-available/CDB_EstimateRowCount.sql
+++ b/scripts-available/CDB_EstimateRowCount.sql
@@ -12,7 +12,7 @@ BEGIN
     EXECUTE Format('ANALYZE %s;', reloid);
   END IF;
 END
-$$ LANGUAGE 'plpgsql' VOLATILE STRICT PARALLEL RESTRICTED SECURITY DEFINER;
+$$ LANGUAGE 'plpgsql' VOLATILE STRICT PARALLEL UNSAFE SECURITY DEFINER;
 
 -- Return a row count estimate of the result of a query using statistics
 CREATE OR REPLACE FUNCTION CDB_EstimateRowCount(query text)
@@ -28,4 +28,4 @@ BEGIN
   EXECUTE 'EXPLAIN (FORMAT JSON) ' || query INTO STRICT plan;
   RETURN plan->0->'Plan'->'Plan Rows';
 END
-$$ LANGUAGE 'plpgsql' VOLATILE STRICT PARALLEL RESTRICTED;
+$$ LANGUAGE 'plpgsql' VOLATILE STRICT PARALLEL UNSAFE;