diff --git a/.github/workflows/check-code.yaml b/.github/workflows/check-code.yaml
index 04132bd..c69ca1e 100644
--- a/.github/workflows/check-code.yaml
+++ b/.github/workflows/check-code.yaml
@@ -56,7 +56,6 @@ jobs:
     strategy:
       matrix:
         go:
-          - "1.16"
           - "1.17"
           - "1.18"
           - "1.19"
diff --git a/go.mod b/go.mod
index 05fab56..4b96f37 100644
--- a/go.mod
+++ b/go.mod
@@ -1,8 +1,14 @@
 module github.com/mythrnr/httprouter-group
 
-go 1.16
+go 1.17
 
 require (
 	github.com/julienschmidt/httprouter v1.3.0
 	github.com/stretchr/testify v1.8.4
 )
+
+require (
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)