diff --git a/.circleci/config.yml b/.circleci/config.yml
deleted file mode 100644
index cb2f734a..00000000
--- a/.circleci/config.yml
+++ /dev/null
@@ -1,26 +0,0 @@
-version: 2
-workflows:
-  version: 2
-  test:
-    jobs:
-      - test-1.15
-      - test-1.16
-jobs:
-  test-1.15:
-    docker:
-      - image: "circleci/golang:1.15"
-    steps: &ref_0
-      - checkout
-      - restore_cache:
-          keys:
-            - go-mod-{{ checksum "go.sum" }}
-      - run: go test -v ./...
-      - run: go install ./...
-      - save_cache:
-          key: go-mod-{{ checksum "go.sum" }}
-          paths:
-            - "/go/pkg/mod"
-  test-1.16:
-    docker:
-      - image: "circleci/golang:1.16"
-    steps: *ref_0
diff --git a/.github/workflows/go.yml b/.github/workflows/go.yml
index 33841df3..cee9fe2c 100644
--- a/.github/workflows/go.yml
+++ b/.github/workflows/go.yml
@@ -4,7 +4,7 @@ jobs:
   test-linux:
     strategy:
       matrix:
-        go-version: [1.15.x, 1.16.x]
+        go-version: [1.16.x, 1.17.x]
     runs-on: ubuntu-latest
     steps:
       - name: Install Go
@@ -20,7 +20,7 @@ jobs:
   test-macos:
     strategy:
       matrix:
-        go-version: [1.15.x, 1.16.x]
+        go-version: [1.16.x, 1.17.x]
     runs-on: macos-latest
     steps:
       - name: Install Go
@@ -36,7 +36,7 @@ jobs:
   test-windows:
     strategy:
       matrix:
-        go-version: [1.15.x, 1.16.x]
+        go-version: [1.16.x, 1.17.x]
     runs-on: windows-latest
     steps:
       - name: Install Go
diff --git a/.github/workflows/golangci-lint.yml b/.github/workflows/golangci-lint.yml
index a5c4d732..a2508a68 100644
--- a/.github/workflows/golangci-lint.yml
+++ b/.github/workflows/golangci-lint.yml
@@ -17,7 +17,7 @@ jobs:
         uses: golangci/golangci-lint-action@v2
         with:
           # Required: the version of golangci-lint is required and must be specified without patch version: we always use the latest patch version.
-          version: v1.39
+          version: "latest"
           # Optional: golangci-lint command line arguments.
           args: --issues-exit-code=1 --timeout=3m0s --tests=false --no-config --max-issues-per-linter=4095 --max-same-issues=1023 --disable-all --enable=deadcode --enable=errcheck --enable=gosimple --enable=govet --enable=ineffassign --enable=staticcheck --enable=structcheck --enable=typecheck --enable=unused --enable=varcheck --enable=bodyclose --enable=dogsled --enable=goconst --enable=gofmt --enable=goimports --enable=golint --enable=goprintffuncname --enable=gosec --enable=misspell --enable=nakedret --enable=prealloc --enable=rowserrcheck --enable=stylecheck --enable=unconvert --enable=unparam --enable=exportloopref --enable=gomodguard --enable=asciicheck --enable=errorlint
           # Optional: show only new issues if it's a pull request. The default value is `false`.
diff --git a/README.md b/README.md
index 3b98b691..c6cc36ce 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 PFCP implementation in Golang.
 
-[![CircleCI](https://circleci.com/gh/wmnsk/go-pfcp.svg?style=shield)](https://circleci.com/gh/wmnsk/go-pfcp)
+![CI status](https://github.com/wmnsk/go-pfcp/actions/workflows/go.yml/badge.svg)
 [![GoDoc](https://godoc.org/github.com/wmnsk/go-pfcp?status.svg)](https://godoc.org/github.com/wmnsk/go-pfcp)
 [![License](https://img.shields.io/github/license/mashape/apistatus.svg)](https://github.com/wmnsk/go-pfcp/blob/master/LICENSE)
 
diff --git a/go.mod b/go.mod
index b3b4de8f..7885d5a6 100644
--- a/go.mod
+++ b/go.mod
@@ -1,9 +1,10 @@
 module github.com/wmnsk/go-pfcp
 
-go 1.16
+go 1.17
 
 require (
 	github.com/google/go-cmp v0.5.5
 	github.com/pascaldekloe/goe v0.1.0
-	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
 )
+
+require golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect