diff --git a/src/osx/cocoa/utils_base.mm b/src/osx/cocoa/utils_base.mm
index 53e52d55d5..928de91a1d 100644
--- a/src/osx/cocoa/utils_base.mm
+++ b/src/osx/cocoa/utils_base.mm
@@ -160,6 +160,9 @@ wxString wxGetOsDescription()
             case 14:
                 osName = "Mojave";
                 break;
+            case 15:
+                osName = "Catalina";
+                break;
         };
     }
 #else