diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 8980043..b29200e 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -14,7 +14,7 @@ jobs:
           fetch-depth: 0
       - uses: actions/setup-go@v2
         with:
-          go-version: 1.15
+          go-version: 1.16
       - uses: goreleaser/goreleaser-action@v2
         with:
           version: latest
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 1512ac1..3f71c0e 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -12,5 +12,5 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-go@v2
         with:
-          go-version: 1.15
+          go-version: 1.16
       - run: go test -v ./...
diff --git a/Dockerfile b/Dockerfile
index 96eaa0b..461a264 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 # Build Go Server Binary
-FROM golang:1.13
+FROM golang:1.16
 LABEL MAINTAINER=KeisukeYamashita
 
 ENV GO111MODULE on
diff --git a/go.mod b/go.mod
index e1c14c6..385ad5c 100644
--- a/go.mod
+++ b/go.mod
@@ -9,4 +9,4 @@ require (
 	gopkg.in/ini.v1 v1.48.0 // indirect
 )
 
-go 1.13
+go 1.16