diff --git a/pyglossary/core.py b/pyglossary/core.py
index 53d0629a4..091d13c97 100644
--- a/pyglossary/core.py
+++ b/pyglossary/core.py
@@ -13,7 +13,7 @@
 )
 import platform
 
-VERSION = "3.4.0rc7"
+VERSION = "4.0.0"
 
 
 TRACE = 5