diff --git a/go.mod b/go.mod
index 722f229..b6c4773 100644
--- a/go.mod
+++ b/go.mod
@@ -2,7 +2,7 @@ module github.com/halprin/fhirpath
 
 go 1.23
 
-toolchain go1.23.0
+toolchain go1.23.6
 
 require (
 	github.com/antlr4-go/antlr/v4 v4.13.1