diff --git a/packages/squiggle-lang/src/rescript/SquiggleLibrary/SquiggleLibrary_Versions.res b/packages/squiggle-lang/src/rescript/SquiggleLibrary/SquiggleLibrary_Versions.res
index 91e9959c..0d39b3b6 100644
--- a/packages/squiggle-lang/src/rescript/SquiggleLibrary/SquiggleLibrary_Versions.res
+++ b/packages/squiggle-lang/src/rescript/SquiggleLibrary/SquiggleLibrary_Versions.res
@@ -2,7 +2,7 @@ module Bindings = Reducer_Bindings
 
 let bindings: Bindings.t =
   [
-    ("System.version", ReducerInterface_InternalExpressionValue.IEvString("0.3.0")),
+    ("System.version", ReducerInterface_InternalExpressionValue.IEvString("0.4.0-dev")),
   ]->Bindings.fromArray
 
 let makeBindings = (previousBindings: Bindings.t): Bindings.t =>