diff --git a/go/tool-policy/go.mod b/go/tool-policy/go.mod
index 54b80b7..4b5c5ff 100644
--- a/go/tool-policy/go.mod
+++ b/go/tool-policy/go.mod
@@ -2,7 +2,7 @@ module example.com/tool-policy
 
 go 1.26.0
 
-require github.com/ai-agent-assembly/go-sdk v0.0.1-rc.3
+require github.com/ai-agent-assembly/go-sdk v0.0.1-rc.4
 
 require (
 	github.com/cespare/xxhash/v2 v2.3.0 // indirect
diff --git a/go/tool-policy/go.sum b/go/tool-policy/go.sum
index 04266c4..bcb2dc0 100644
--- a/go/tool-policy/go.sum
+++ b/go/tool-policy/go.sum
@@ -1,5 +1,5 @@
-github.com/ai-agent-assembly/go-sdk v0.0.1-rc.3 h1:XdWWZkAzTsX46526FEmOSr1gugGpuGKRE9Z81KzsKEo=
-github.com/ai-agent-assembly/go-sdk v0.0.1-rc.3/go.mod h1:9u0PslzevSjgQNneKD+yWkcZeK6YhlpgahgDQiAYfXQ=
+github.com/ai-agent-assembly/go-sdk v0.0.1-rc.4 h1:zI/pXKF9rlaFQzjHqy3B/pyLcIg3b9FX0tEHEZWE3nU=
+github.com/ai-agent-assembly/go-sdk v0.0.1-rc.4/go.mod h1:Itj0i/4Tev8Ln2VkSn2udJqdCZSf6Vx4FKPrN/HdnP8=
 github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
 github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=