diff --git a/dwave/optimization/__init__.py b/dwave/optimization/__init__.py
index f76fc111..ecd78a7f 100644
--- a/dwave/optimization/__init__.py
+++ b/dwave/optimization/__init__.py
@@ -17,7 +17,7 @@
 from dwave.optimization.model import Model
 from dwave.optimization.mathematical import *
 
-__version__ = "0.4.2.dev"
+__version__ = "0.4.2"
 
 
 def get_include() -> str: