diff --git a/.drone.yml b/.drone.yml
index 9775c43..9511bab 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -9,7 +9,7 @@ platform:
 steps:
 - name: vet
   pull: always
-  image: golang:1.13
+  image: golang:1.14
   commands:
   - make vet
   volumes:
@@ -18,7 +18,7 @@ steps:
 
 - name: lint
   pull: always
-  image: golang:1.13
+  image: golang:1.14
   commands:
   - make lint
   volumes:
@@ -27,7 +27,7 @@ steps:
 
 - name: misspell
   pull: always
-  image: golang:1.13
+  image: golang:1.14
   commands:
   - make misspell-check
   volumes:
@@ -36,7 +36,7 @@ steps:
 
 - name: embedmd
   pull: always
-  image: golang:1.13
+  image: golang:1.14
   commands:
   - make embedmd
   volumes:
@@ -45,7 +45,7 @@ steps:
 
 - name: test
   pull: always
-  image: golang:1.13
+  image: golang:1.14
   commands:
   - make test
   environment:
@@ -83,7 +83,7 @@ platform:
 steps:
 - name: build-push
   pull: always
-  image: golang:1.13
+  image: golang:1.14
   commands:
   - go build -v -ldflags '-X main.build=${DRONE_BUILD_NUMBER}' -a -o release/linux/amd64/gorush
   environment:
@@ -95,7 +95,7 @@ steps:
 
 - name: build-tag
   pull: always
-  image: golang:1.13
+  image: golang:1.14
   commands:
   - go build -v -ldflags '-X main.version=${DRONE_TAG##v} -X main.build=${DRONE_BUILD_NUMBER}' -a -o release/linux/amd64/gorush
   environment:
@@ -106,7 +106,7 @@ steps:
 
 - name: executable
   pull: always
-  image: golang:1.13
+  image: golang:1.14
   commands:
   - ./release/linux/amd64/gorush --help
 
@@ -162,7 +162,7 @@ platform:
 steps:
 - name: build-push
   pull: always
-  image: golang:1.13
+  image: golang:1.14
   commands:
   - go build -v -ldflags '-X main.build=${DRONE_BUILD_NUMBER}' -a -o release/linux/arm64/gorush
   environment:
@@ -174,7 +174,7 @@ steps:
 
 - name: build-tag
   pull: always
-  image: golang:1.13
+  image: golang:1.14
   commands:
   - go build -v -ldflags '-X main.version=${DRONE_TAG##v} -X main.build=${DRONE_BUILD_NUMBER}' -a -o release/linux/arm64/gorush
   environment:
@@ -185,7 +185,7 @@ steps:
 
 - name: executable
   pull: always
-  image: golang:1.13
+  image: golang:1.14
   commands:
   - ./release/linux/arm64/gorush --help
 
@@ -241,7 +241,7 @@ platform:
 steps:
 - name: build-push
   pull: always
-  image: golang:1.13
+  image: golang:1.14
   commands:
   - go build -v -ldflags '-X main.build=${DRONE_BUILD_NUMBER}' -a -o release/linux/arm/gorush
   environment:
@@ -253,7 +253,7 @@ steps:
 
 - name: build-tag
   pull: always
-  image: golang:1.13
+  image: golang:1.14
   commands:
   - go build -v -ldflags '-X main.version=${DRONE_TAG##v} -X main.build=${DRONE_BUILD_NUMBER}' -a -o release/linux/arm/gorush
   environment:
@@ -264,7 +264,7 @@ steps:
 
 - name: executable
   pull: always
-  image: golang:1.13
+  image: golang:1.14
   commands:
   - ./release/linux/arm/gorush --help
 
@@ -320,7 +320,7 @@ platform:
 steps:
 - name: build-all-binary
   pull: always
-  image: golang:1.13
+  image: golang:1.14
   commands:
   - make release
   when:
diff --git a/gorush/notification_test.go b/gorush/notification_test.go
index ca0058c..c7b41ca 100644
--- a/gorush/notification_test.go
+++ b/gorush/notification_test.go
@@ -208,7 +208,7 @@ func TestSetProxyURL(t *testing.T) {
 
 	err := SetProxy("87.236.233.92:8080")
 	assert.Error(t, err)
-	assert.Equal(t, "parse 87.236.233.92:8080: invalid URI for request", err.Error())
+	assert.Equal(t, "parse \"87.236.233.92:8080\": invalid URI for request", err.Error())
 
 	err = SetProxy("a.html")
 	assert.Error(t, err)
diff --git a/pipeline.libsonnet b/pipeline.libsonnet
index 65e5015..71e7aef 100644
--- a/pipeline.libsonnet
+++ b/pipeline.libsonnet
@@ -9,7 +9,7 @@
     steps: [
       {
         name: 'vet',
-        image: 'golang:1.13',
+        image: 'golang:1.14',
         pull: 'always',
         commands: [
           'make vet',
@@ -23,7 +23,7 @@
       },
       {
         name: 'lint',
-        image: 'golang:1.13',
+        image: 'golang:1.14',
         pull: 'always',
         commands: [
           'make lint',
@@ -37,7 +37,7 @@
       },
       {
         name: 'misspell',
-        image: 'golang:1.13',
+        image: 'golang:1.14',
         pull: 'always',
         commands: [
           'make misspell-check',
@@ -51,7 +51,7 @@
       },
       {
         name: 'embedmd',
-        image: 'golang:1.13',
+        image: 'golang:1.14',
         pull: 'always',
         commands: [
           'make embedmd',
@@ -65,7 +65,7 @@
       },
       {
         name: 'test',
-        image: 'golang:1.13',
+        image: 'golang:1.14',
         pull: 'always',
         environment: {
           ANDROID_API_KEY: { 'from_secret': 'android_api_key' },
@@ -114,7 +114,7 @@
     steps: [
       {
         name: 'build-push',
-        image: 'golang:1.13',
+        image: 'golang:1.14',
         pull: 'always',
         environment: {
           CGO_ENABLED: '0',
@@ -130,7 +130,7 @@
       },
       // {
       //   name: 'build-push-lambda',
-      //   image: 'golang:1.13',
+      //   image: 'golang:1.14',
       //   pull: 'always',
       //   environment: {
       //     CGO_ENABLED: '0',
@@ -146,7 +146,7 @@
       // },
       {
         name: 'build-tag',
-        image: 'golang:1.13',
+        image: 'golang:1.14',
         pull: 'always',
         environment: {
           CGO_ENABLED: '0',
@@ -160,7 +160,7 @@
       },
       {
         name: 'executable',
-        image: 'golang:1.13',
+        image: 'golang:1.14',
         pull: 'always',
         commands: [
           './release/' + os + '/' + arch + '/' + name + ' --help',
@@ -225,7 +225,7 @@
     steps: [
       {
         name: 'build-all-binary',
-        image: 'golang:1.13',
+        image: 'golang:1.14',
         pull: 'always',
         commands: [
           'make release'