diff --git a/.golangci.yml b/.golangci.yml
index 11442290..d30fa30d 100644
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -3,7 +3,7 @@ linters:
   enable:
     - gofumpt
     - govet
-#    - gci
+    - gci
     - staticcheck
     - paralleltest
 
@@ -14,10 +14,11 @@ run:
     - transport/cloudflaretls
 
 linters-settings:
-#  gci:
-#    sections:
-#      - standard
-#      - prefix(github.com/sagernet/)
-#      - default
+  gci:
+    custom-order: true
+    sections:
+      - standard
+      - prefix(github.com/sagernet/)
+      - default
   staticcheck:
-    go: '1.19'
+    go: '1.20'
diff --git a/Makefile b/Makefile
index 01d63781..19a53276 100644
--- a/Makefile
+++ b/Makefile
@@ -16,11 +16,11 @@ install:
 fmt:
 	@gofumpt -l -w .
 	@gofmt -s -w .
-	@gci write -s "standard,prefix(github.com/sagernet/),default" .
+	@gci write --custom-order -s "standard,prefix(github.com/sagernet/),default" .
 
 fmt_install:
 	go install -v mvdan.cc/gofumpt@latest
-	go install -v github.com/daixiang0/gci@v0.4.0
+	go install -v github.com/daixiang0/gci@latest
 
 lint:
 	GOOS=linux golangci-lint run ./...