diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index a29ad8789..741fdba1e 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -4,7 +4,7 @@ jobs:
   build:
     strategy:
       matrix:
-        go-version: [1.16.x, 1.17.x]
+        go-version: [1.17.x, 1.18.x]
         goarch: [386, amd64, arm, arm64, ppc64le, s390x]
         os: [ubuntu-latest] #, macos-latest, windows-latest]
     runs-on: ${{ matrix.os }}
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 81b34a0c2..991b2b433 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -15,7 +15,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v2
         with:
-          go-version: 1.15.x
+          go-version: 1.17.x
 
       - name: Run GoReleaser
         uses: goreleaser/goreleaser-action@v2
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 2b2c96eb2..d2576819c 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -4,7 +4,7 @@ jobs:
   test:
     strategy:
       matrix:
-        go-version: [1.16.x, 1.17.x]
+        go-version: [1.17.x, 1.18.x]
         os: [ubuntu-latest]
     runs-on: ${{ matrix.os }}
     steps:
diff --git a/cmd/multus-daemon/main.go b/cmd/multus-daemon/main.go
index 6d6236f8a..2c7e77a09 100644
--- a/cmd/multus-daemon/main.go
+++ b/cmd/multus-daemon/main.go
@@ -49,7 +49,6 @@ const (
 	defaultMultusMasterCNIFile          = ""
 	defaultMultusNamespaceIsolation     = false
 	defaultMultusReadinessIndicatorFile = ""
-	defaultMultusRunDir                 = "/host/run/multus-cni/"
 )
 
 const (
@@ -68,7 +67,6 @@ const (
 	multusMasterCNIFileVarName   = "multus-master-cni-file"
 	multusNamespaceIsolation     = "namespace-isolation"
 	multusReadinessIndicatorFile = "readiness-indicator-file"
-	multusRunDir                 = "multus-rundir"
 )
 
 func main() {
diff --git a/images/Dockerfile b/images/Dockerfile
index 6b0ea31bf..e37bfc0ae 100644
--- a/images/Dockerfile
+++ b/images/Dockerfile
@@ -1,5 +1,5 @@
 # This Dockerfile is used to build the image available on DockerHub
-FROM golang:1.17.1 as build
+FROM golang:1.17.9 as build
 
 # Add everything
 ADD . /usr/src/multus-cni
diff --git a/images/Dockerfile.arm32 b/images/Dockerfile.arm32
index f8e953eef..3b26b26a1 100644
--- a/images/Dockerfile.arm32
+++ b/images/Dockerfile.arm32
@@ -1,5 +1,5 @@
 # This Dockerfile is used to build the image available on DockerHub
-FROM golang:1.17.1 as build
+FROM golang:1.17.9 as build
 
 # Add everything
 ADD . /usr/src/multus-cni
diff --git a/images/Dockerfile.arm64 b/images/Dockerfile.arm64
index 3a3cd916c..89eb8bb60 100644
--- a/images/Dockerfile.arm64
+++ b/images/Dockerfile.arm64
@@ -1,5 +1,5 @@
 # This Dockerfile is used to build the image available on DockerHub
-FROM golang:1.17.1 as build
+FROM golang:1.17.9 as build
 
 # Add everything
 ADD . /usr/src/multus-cni
diff --git a/images/Dockerfile.ppc64le b/images/Dockerfile.ppc64le
index caf0a6431..f40c0e59f 100644
--- a/images/Dockerfile.ppc64le
+++ b/images/Dockerfile.ppc64le
@@ -1,5 +1,5 @@
 # This Dockerfile is used to build the image available on DockerHub
-FROM golang:1.17.1 as build
+FROM golang:1.17.9 as build
 
 # Add everything
 ADD . /usr/src/multus-cni
diff --git a/images/Dockerfile.s390x b/images/Dockerfile.s390x
index 731c2a9b0..8736584eb 100644
--- a/images/Dockerfile.s390x
+++ b/images/Dockerfile.s390x
@@ -1,5 +1,5 @@
 # This Dockerfile is used to build the image available on DockerHub
-FROM golang:1.17 as build
+FROM golang:1.17.9 as build
 
 # Add everything
 ADD . /usr/src/multus-cni
diff --git a/images/Dockerfile.thick b/images/Dockerfile.thick
index b359ac111..6068c6f53 100644
--- a/images/Dockerfile.thick
+++ b/images/Dockerfile.thick
@@ -1,5 +1,5 @@
 # This Dockerfile is used to build the image available on DockerHub
-FROM golang:1.17.1 as build
+FROM golang:1.17.9 as build
 
 # Add everything
 ADD . /usr/src/multus-cni
diff --git a/pkg/k8sclient/k8sclient.go b/pkg/k8sclient/k8sclient.go
index b9b4cef6f..5be2b3fc6 100644
--- a/pkg/k8sclient/k8sclient.go
+++ b/pkg/k8sclient/k8sclient.go
@@ -92,7 +92,7 @@ func (c *ClientInfo) Eventf(object runtime.Object, eventtype, reason, messageFmt
 	}
 }
 
-func (e *NoK8sNetworkError) Error() string { return string(e.message) }
+func (e *NoK8sNetworkError) Error() string { return e.message }
 
 // SetNetworkStatus sets network status into Pod annotation
 func SetNetworkStatus(client *ClientInfo, k8sArgs *types.K8sArgs, netStatus []nettypes.NetworkStatus, conf *types.NetConf) error {