diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 7284a96..d9d6f5d 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -11,7 +11,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: '>=1.18'
+          go-version: '>=1.21'
       - run: go get
       - name: golangci-lint
         uses: golangci/golangci-lint-action@v3
@@ -22,7 +22,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        go: [ '1.16', '1.17', '1.18', '>=1.18' ]
+        go: ['1.19', '1.20', '1.21', '>=1.21']
     name: Go ${{ matrix.go }} test
     steps:
       - uses: actions/checkout@v4
@@ -32,4 +32,4 @@ jobs:
           go-version: ${{ matrix.go }}
       - name: Installing dependencies
         run: go get
-      - run: make test
\ No newline at end of file
+      - run: make test
diff --git a/go.mod b/go.mod
index de4a5ba..6236da0 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/fabiomatavelli/millennium-go
 
-go 1.18
+go 1.21
 
 require (
 	github.com/Azure/go-ntlmssp v0.0.0-20211209120228-48547f28849e