diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d008c55..f97ce96 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,10 +14,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
 
     - name: Set up Go 1.x
-      uses: actions/setup-go@v5
+      uses: actions/setup-go@v6
       with:
         go-version-file: 'go.mod'
     
@@ -36,10 +36,10 @@ jobs:
     needs: [ tests ]
     steps:
     - name: Checkout
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
 
     - name: Set up Go 1.x
-      uses: actions/setup-go@v5
+      uses: actions/setup-go@v6
       with:
         go-version-file: 'go.mod'
 
@@ -54,11 +54,11 @@ jobs:
         password: ${{ secrets.GITHUB_TOKEN }}
 
     - name: golangci-lint
-      uses: golangci/golangci-lint-action@v6
+      uses: golangci/golangci-lint-action@v9
 
     - name: Prepare a snapshot release
       if: ${{ !startsWith(github.ref, 'refs/tags/v') }}
-      uses: goreleaser/goreleaser-action@v3
+      uses: goreleaser/goreleaser-action@v6
       with:
         version: latest
         args: release --clean --snapshot
@@ -68,7 +68,7 @@ jobs:
 
     - name: Release a new version
       if: ${{ startsWith(github.ref, 'refs/tags/v') }}
-      uses: goreleaser/goreleaser-action@v4
+      uses: goreleaser/goreleaser-action@v6
       with:
         version: latest
         args: release --clean
diff --git a/go.mod b/go.mod
index 2da1184..f07e30a 100644
--- a/go.mod
+++ b/go.mod
@@ -1,22 +1,20 @@
 module lprobe
 
-go 1.24.0
-
-toolchain go1.24.8
+go 1.26.0
 
 require (
 	github.com/spiffe/go-spiffe/v2 v2.6.0
-	golang.org/x/exp v0.0.0-20251219203646-944ab1f22d93
+	golang.org/x/exp v0.0.0-20260209203927-2842357ff358
 	google.golang.org/grpc v1.78.0
 )
 
 require (
 	github.com/Microsoft/go-winio v0.6.2 // indirect
 	github.com/go-jose/go-jose/v4 v4.1.3 // indirect
-	golang.org/x/net v0.48.0 // indirect
+	golang.org/x/net v0.50.0 // indirect
 	golang.org/x/sync v0.19.0 // indirect
-	golang.org/x/sys v0.40.0 // indirect
-	golang.org/x/text v0.33.0 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20251222181119-0a764e51fe1b // indirect
+	golang.org/x/sys v0.41.0 // indirect
+	golang.org/x/text v0.34.0 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20260209200024-4cfbd4190f57 // indirect
 	google.golang.org/protobuf v1.36.11 // indirect
 )
diff --git a/go.sum b/go.sum
index a163e2d..e5b752b 100644
--- a/go.sum
+++ b/go.sum
@@ -32,20 +32,20 @@ go.opentelemetry.io/otel/sdk/metric v1.38.0 h1:aSH66iL0aZqo//xXzQLYozmWrXxyFkBJ6
 go.opentelemetry.io/otel/sdk/metric v1.38.0/go.mod h1:dg9PBnW9XdQ1Hd6ZnRz689CbtrUp0wMMs9iPcgT9EZA=
 go.opentelemetry.io/otel/trace v1.38.0 h1:Fxk5bKrDZJUH+AMyyIXGcFAPah0oRcT+LuNtJrmcNLE=
 go.opentelemetry.io/otel/trace v1.38.0/go.mod h1:j1P9ivuFsTceSWe1oY+EeW3sc+Pp42sO++GHkg4wwhs=
-golang.org/x/exp v0.0.0-20251219203646-944ab1f22d93 h1:fQsdNF2N+/YewlRZiricy4P1iimyPKZ/xwniHj8Q2a0=
-golang.org/x/exp v0.0.0-20251219203646-944ab1f22d93/go.mod h1:EPRbTFwzwjXj9NpYyyrvenVh9Y+GFeEvMNh7Xuz7xgU=
-golang.org/x/net v0.48.0 h1:zyQRTTrjc33Lhh0fBgT/H3oZq9WuvRR5gPC70xpDiQU=
-golang.org/x/net v0.48.0/go.mod h1:+ndRgGjkh8FGtu1w1FGbEC31if4VrNVMuKTgcAAnQRY=
+golang.org/x/exp v0.0.0-20260209203927-2842357ff358 h1:kpfSV7uLwKJbFSEgNhWzGSL47NDSF/5pYYQw1V0ub6c=
+golang.org/x/exp v0.0.0-20260209203927-2842357ff358/go.mod h1:R3t0oliuryB5eenPWl3rrQxwnNM3WTwnsRZZiXLAAW8=
+golang.org/x/net v0.50.0 h1:ucWh9eiCGyDR3vtzso0WMQinm2Dnt8cFMuQa9K33J60=
+golang.org/x/net v0.50.0/go.mod h1:UgoSli3F/pBgdJBHCTc+tp3gmrU4XswgGRgtnwWTfyM=
 golang.org/x/sync v0.19.0 h1:vV+1eWNmZ5geRlYjzm2adRgW2/mcpevXNg50YZtPCE4=
 golang.org/x/sync v0.19.0/go.mod h1:9KTHXmSnoGruLpwFjVSX0lNNA75CykiMECbovNTZqGI=
-golang.org/x/sys v0.40.0 h1:DBZZqJ2Rkml6QMQsZywtnjnnGvHza6BTfYFWY9kjEWQ=
-golang.org/x/sys v0.40.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
-golang.org/x/text v0.33.0 h1:B3njUFyqtHDUI5jMn1YIr5B0IE2U0qck04r6d4KPAxE=
-golang.org/x/text v0.33.0/go.mod h1:LuMebE6+rBincTi9+xWTY8TztLzKHc/9C1uBCG27+q8=
+golang.org/x/sys v0.41.0 h1:Ivj+2Cp/ylzLiEU89QhWblYnOE9zerudt9Ftecq2C6k=
+golang.org/x/sys v0.41.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
+golang.org/x/text v0.34.0 h1:oL/Qq0Kdaqxa1KbNeMKwQq0reLCCaFtqu2eNuSeNHbk=
+golang.org/x/text v0.34.0/go.mod h1:homfLqTYRFyVYemLBFl5GgL/DWEiH5wcsQ5gSh1yziA=
 gonum.org/v1/gonum v0.16.0 h1:5+ul4Swaf3ESvrOnidPp4GZbzf0mxVQpDCYUQE7OJfk=
 gonum.org/v1/gonum v0.16.0/go.mod h1:fef3am4MQ93R2HHpKnLk4/Tbh/s0+wqD5nfa6Pnwy4E=
-google.golang.org/genproto/googleapis/rpc v0.0.0-20251222181119-0a764e51fe1b h1:Mv8VFug0MP9e5vUxfBcE3vUkV6CImK3cMNMIDFjmzxU=
-google.golang.org/genproto/googleapis/rpc v0.0.0-20251222181119-0a764e51fe1b/go.mod h1:j9x/tPzZkyxcgEFkiKEEGxfvyumM01BEtsW8xzOahRQ=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20260209200024-4cfbd4190f57 h1:mWPCjDEyshlQYzBpMNHaEof6UX1PmHcaUODUywQ0uac=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20260209200024-4cfbd4190f57/go.mod h1:j9x/tPzZkyxcgEFkiKEEGxfvyumM01BEtsW8xzOahRQ=
 google.golang.org/grpc v1.78.0 h1:K1XZG/yGDJnzMdd/uZHAkVqJE+xIDOcmdSFZkBUicNc=
 google.golang.org/grpc v1.78.0/go.mod h1:I47qjTo4OKbMkjA/aOOwxDIiPSBofUtQUI5EfpWvW7U=
 google.golang.org/protobuf v1.36.11 h1:fV6ZwhNocDyBLK0dj+fg8ektcVegBBuEolpbTQyBNVE=
diff --git a/grpc_healthcheck.go b/grpc_healthcheck.go
index 699f082..51cbc16 100644
--- a/grpc_healthcheck.go
+++ b/grpc_healthcheck.go
@@ -113,7 +113,11 @@ func grpchealthprobe(flAddr string) (string, int) {
 		return "ERR", StatusConnectionFailure
 	}
 	connDuration := time.Since(connStart)
-	defer conn.Close()
+	defer func() {
+		if err := conn.Close(); err != nil {
+			log.Printf("error closing gRPC connection: %v", err)
+		}
+	}()
 	if flVerbose {
 		log.Printf("connection established (took %v)", connDuration)
 	}
diff --git a/http_healthcheck.go b/http_healthcheck.go
index 33ab32d..88f76a8 100644
--- a/http_healthcheck.go
+++ b/http_healthcheck.go
@@ -83,7 +83,11 @@ func httpHealthCheck() (error) {
 		log.Printf("failed to execute http request. error=%v", respErr)
 		return respErr
 	}
-	defer httpResponse.Body.Close()
+	defer func() {
+		if err := httpResponse.Body.Close(); err != nil {
+			log.Printf("failed to close http response body. error=%v", err)
+		}
+	}()
 
 	// check http response code
 	if !validHTTPCodes[httpResponse.StatusCode] {
diff --git a/main.go b/main.go
index ed8d105..59a141b 100644
--- a/main.go
+++ b/main.go
@@ -7,14 +7,15 @@ import (
 
 func main() {
 
-	if flMode == "http" {
+	switch flMode {
+	case "http":
 		// HTTP check
 		err := httpHealthCheck()
 		if err != nil {
 			fmt.Printf("Error: %v", err)
 			os.Exit(1)
 		}
-	} else if flMode == "grpc" {
+	case "grpc":
 		// gRPC check
 		status := grpcHealthCheck()
 		if status != "" {
@@ -22,7 +23,7 @@ func main() {
 			os.Exit(1)
 		}
 		os.Exit(0)
-	} else {
+	default:
 		// unkown check
 		fmt.Printf("Error: Unsupported -mode. Please use one of %v", getSupportedModes())
 		os.Exit(1)
diff --git a/scripts/test.sh b/scripts/test.sh
index adab9f9..d4724d3 100755
--- a/scripts/test.sh
+++ b/scripts/test.sh
@@ -1,5 +1,7 @@
 #!/usr/bin/env bash
 
+export DOCKER_DEFAULT_PLATFORM="linux/amd64"
+
 # set -e
 rm -rf ./lprobe
 go build