diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3562e9a7..f0cf5934 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -25,7 +25,7 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v1
         with:
-          go-version: '1.13.12'
+          go-version: '1.15'
 
       - name: Set env
         shell: bash
@@ -90,7 +90,7 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v1
         with:
-          go-version: '1.13.12'
+          go-version: '1.15'
 
       - name: Set env
         shell: bash
diff --git a/Vagrantfile b/Vagrantfile
index e1ec5b4a..4596ad8a 100644
--- a/Vagrantfile
+++ b/Vagrantfile
@@ -15,7 +15,7 @@ Vagrant.configure("2") do |config|
   config.vm.provision "shell", inline: <<-SHELL
     set -eux -o pipefail
     # configuration
-    GO_VERSION="1.13.12"
+    GO_VERSION="1.15"
 
     # install gcc and Golang
     dnf -y install gcc