diff --git a/.github/workflows/depscheck.yaml b/.github/workflows/depscheck.yaml
index 29335ca659b5..9474d204a130 100644
--- a/.github/workflows/depscheck.yaml
+++ b/.github/workflows/depscheck.yaml
@@ -16,7 +16,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-go@v2
         with:
-         go-version: '1.18.1'
+         go-version: '1.18.5'
       - run: bash scripts/gogetcookie.sh
       - run: make tools
       - run: make depscheck
diff --git a/.github/workflows/gencheck.yaml b/.github/workflows/gencheck.yaml
index 00e1d253774a..5b67e882edfd 100644
--- a/.github/workflows/gencheck.yaml
+++ b/.github/workflows/gencheck.yaml
@@ -20,7 +20,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-go@v2
         with:
-          go-version: '1.18.1'
+          go-version: '1.18.5'
       - run: bash scripts/gogetcookie.sh
       - run: make tools
       - run: make gencheck
diff --git a/.github/workflows/golint.yaml b/.github/workflows/golint.yaml
index 9e436960a83d..5dd06d52c0d1 100644
--- a/.github/workflows/golint.yaml
+++ b/.github/workflows/golint.yaml
@@ -20,7 +20,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-go@v2
         with:
-          go-version: '1.18.1'
+          go-version: '1.18.5'
       - uses: golangci/golangci-lint-action@v2
         with:
           version: 'v1.45.0'
diff --git a/.github/workflows/gradually-deprecated.yaml b/.github/workflows/gradually-deprecated.yaml
index 3b854851353f..51c3abe97f8f 100644
--- a/.github/workflows/gradually-deprecated.yaml
+++ b/.github/workflows/gradually-deprecated.yaml
@@ -16,5 +16,5 @@ jobs:
           fetch-depth: 0
       - uses: actions/setup-go@v2
         with:
-          go-version: '1.18.1'
+          go-version: '1.18.5'
       - run: ./scripts/run-gradually-deprecated.sh
diff --git a/.github/workflows/link-milestone.yaml b/.github/workflows/link-milestone.yaml
index b497805f8e22..a531f5136f01 100644
--- a/.github/workflows/link-milestone.yaml
+++ b/.github/workflows/link-milestone.yaml
@@ -16,7 +16,7 @@ jobs:
     steps:
       - uses: actions/setup-go@v2
         with:
-          go-version: '1.18.1'
+          go-version: '1.18.5'
       - run: |
           go install github.com/stephybun/link-milestone@latest
           link-milestone
diff --git a/.github/workflows/tflint.yaml b/.github/workflows/tflint.yaml
index c8e4400abaa6..74e6a65f4365 100644
--- a/.github/workflows/tflint.yaml
+++ b/.github/workflows/tflint.yaml
@@ -20,7 +20,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-go@v2
         with:
-          go-version: '1.18.1'
+          go-version: '1.18.5'
       - run: bash scripts/gogetcookie.sh
       - run: make tools
       - run: make tflint
diff --git a/.github/workflows/thirty-two-bit.yaml b/.github/workflows/thirty-two-bit.yaml
index 658d2f5c5ab0..97ad3a9713bf 100644
--- a/.github/workflows/thirty-two-bit.yaml
+++ b/.github/workflows/thirty-two-bit.yaml
@@ -20,7 +20,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-go@v2
         with:
-          go-version: '1.18.1'
+          go-version: '1.18.5'
       - run: bash scripts/gogetcookie.sh
       - run: make tools
       - run: GOARCH=386 GOOS=linux go build -o 32bitbuild .
diff --git a/.github/workflows/unit-test.yaml b/.github/workflows/unit-test.yaml
index cb1820ea7ef1..69116e6920f2 100644
--- a/.github/workflows/unit-test.yaml
+++ b/.github/workflows/unit-test.yaml
@@ -19,7 +19,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-go@v2
         with:
-          go-version: '1.18.1'
+          go-version: '1.18.5'
       - run: bash scripts/gogetcookie.sh
       - run: make test
         env:
diff --git a/.github/workflows/validate-examples.yaml b/.github/workflows/validate-examples.yaml
index 7ef44548a1dc..23e3a238d075 100644
--- a/.github/workflows/validate-examples.yaml
+++ b/.github/workflows/validate-examples.yaml
@@ -18,7 +18,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-go@v2
         with:
-          go-version: '1.18.1'
+          go-version: '1.18.5'
       - run: bash scripts/gogetcookie.sh
       - run: make tools
       - run: make validate-examples
diff --git a/.github/workflows/website-lint.yaml b/.github/workflows/website-lint.yaml
index 57fd18b081d5..954a754cb5d9 100644
--- a/.github/workflows/website-lint.yaml
+++ b/.github/workflows/website-lint.yaml
@@ -14,7 +14,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-go@v2
         with:
-          go-version: '1.18.1'
+          go-version: '1.18.5'
       - run: bash scripts/gogetcookie.sh
       - run: make tools
       - run: make website-lint
diff --git a/.go-version b/.go-version
index 5ce8b3959987..8e8b0a9335a8 100644
--- a/.go-version
+++ b/.go-version
@@ -1 +1 @@
-1.18.1
\ No newline at end of file
+1.18.5