diff --git a/Makefile b/Makefile
index 9786b30bb..ebc252ae6 100644
--- a/Makefile
+++ b/Makefile
@@ -16,6 +16,7 @@ LDFLAGS=-ldflags "-X main.version=$(VERSION) -X main.gitCommit=$(GIT_COMMIT) -X
 # Go variables
 GO?=go
 GOFLAGS?=-v
+export GOTOOLCHAIN?=local
 
 # Installation
 INSTALL_PREFIX?=$(HOME)/.local
diff --git a/go.mod b/go.mod
index 1f88639c8..48997b899 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/sipeed/picoclaw
 
-go 1.25.7
+go 1.25.6
 
 require (
 	github.com/adhocore/gronx v1.19.6