diff --git a/.drone.yml b/.drone.yml
index 60da8a9..d0cebc0 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -9,45 +9,38 @@ platform:
 steps:
 - name: vet
   pull: always
-  image: golang:1.12
+  image: golang:1.13
   commands:
   - make vet
-  environment:
-    GO111MODULE: on
   volumes:
   - name: gopath
     path: /go
 
 - name: lint
   pull: always
-  image: golang:1.12
+  image: golang:1.13
   commands:
   - make lint
-  environment:
-    GO111MODULE: on
   volumes:
   - name: gopath
     path: /go
 
 - name: misspell
   pull: always
-  image: golang:1.12
+  image: golang:1.13
   commands:
   - make misspell-check
-  environment:
-    GO111MODULE: on
   volumes:
   - name: gopath
     path: /go
 
 - name: test
   pull: always
-  image: golang:1.12
+  image: golang:1.13
   commands:
   - make test
   - make coverage
   environment:
-    GO111MODULE: on
     TELEGRAM_TO:
       from_secret: telegram_to
     TELEGRAM_TOKEN:
@@ -78,12 +71,11 @@ platform:
 steps:
 - name: build-push
   pull: always
-  image: golang:1.12
+  image: golang:1.13
   commands:
   - "go build -v -ldflags '-X main.build=${DRONE_BUILD_NUMBER}' -a -o release/linux/amd64/drone-telegram"
   environment:
     CGO_ENABLED: 0
-    GO111MODULE: on
   when:
     event:
       exclude:
@@ -91,19 +83,18 @@ steps:
 
 - name: build-tag
   pull: always
-  image: golang:1.12
+  image: golang:1.13
   commands:
   - "go build -v -ldflags '-X main.version=${DRONE_TAG##v} -X main.build=${DRONE_BUILD_NUMBER}' -a -o release/linux/amd64/drone-telegram"
   environment:
     CGO_ENABLED: 0
-    GO111MODULE: on
   when:
     event:
     - tag
 
 - name: executable
   pull: always
-  image: golang:1.12
+  image: golang:1.13
   commands:
   - ./release/linux/amd64/drone-telegram --help
 
@@ -159,12 +150,11 @@ platform:
 steps:
 - name: build-push
   pull: always
-  image: golang:1.12
+  image: golang:1.13
   commands:
   - "go build -v -ldflags '-X main.build=${DRONE_BUILD_NUMBER}' -a -o release/linux/arm64/drone-telegram"
   environment:
     CGO_ENABLED: 0
-    GO111MODULE: on
   when:
     event:
       exclude:
@@ -172,19 +162,18 @@ steps:
 
 - name: build-tag
   pull: always
-  image: golang:1.12
+  image: golang:1.13
   commands:
   - "go build -v -ldflags '-X main.version=${DRONE_TAG##v} -X main.build=${DRONE_BUILD_NUMBER}' -a -o release/linux/arm64/drone-telegram"
   environment:
     CGO_ENABLED: 0
-    GO111MODULE: on
   when:
     event:
     - tag
 
 - name: executable
   pull: always
-  image: golang:1.12
+  image: golang:1.13
   commands:
   - ./release/linux/arm64/drone-telegram --help
 
@@ -240,12 +229,11 @@ platform:
 steps:
 - name: build-push
   pull: always
-  image: golang:1.12
+  image: golang:1.13
   commands:
   - "go build -v -ldflags '-X main.build=${DRONE_BUILD_NUMBER}' -a -o release/linux/arm/drone-telegram"
   environment:
     CGO_ENABLED: 0
-    GO111MODULE: on
   when:
     event:
       exclude:
@@ -253,19 +241,18 @@ steps:
 
 - name: build-tag
   pull: always
-  image: golang:1.12
+  image: golang:1.13
   commands:
   - "go build -v -ldflags '-X main.version=${DRONE_TAG##v} -X main.build=${DRONE_BUILD_NUMBER}' -a -o release/linux/arm/drone-telegram"
   environment:
     CGO_ENABLED: 0
-    GO111MODULE: on
   when:
     event:
     - tag
 
 - name: executable
   pull: always
-  image: golang:1.12
+  image: golang:1.13
   commands:
   - ./release/linux/arm/drone-telegram --help
 
@@ -321,11 +308,9 @@ platform:
 steps:
 - name: build-all-binary
   pull: always
-  image: golang:1.12
+  image: golang:1.13
   commands:
   - make release
-  environment:
-    GO111MODULE: on
   when:
     event:
     - tag
diff --git a/pipeline.libsonnet b/pipeline.libsonnet
index 3d02738..16c6ec4 100644
--- a/pipeline.libsonnet
+++ b/pipeline.libsonnet
@@ -9,11 +9,8 @@
     steps: [
       {
         name: 'vet',
-        image: 'golang:1.12',
+        image: 'golang:1.13',
         pull: 'always',
-        environment: {
-          GO111MODULE: 'on',
-        },
         commands: [
           'make vet',
         ],
@@ -26,11 +23,8 @@
       },
       {
         name: 'lint',
-        image: 'golang:1.12',
+        image: 'golang:1.13',
         pull: 'always',
-        environment: {
-          GO111MODULE: 'on',
-        },
         commands: [
           'make lint',
         ],
@@ -43,11 +37,8 @@
       },
       {
         name: 'misspell',
-        image: 'golang:1.12',
+        image: 'golang:1.13',
         pull: 'always',
-        environment: {
-          GO111MODULE: 'on',
-        },
         commands: [
           'make misspell-check',
         ],
@@ -60,10 +51,9 @@
       },
       {
         name: 'test',
-        image: 'golang:1.12',
+        image: 'golang:1.13',
         pull: 'always',
         environment: {
-          GO111MODULE: 'on',
           TELEGRAM_TOKEN: { 'from_secret': 'telegram_token' },
           TELEGRAM_TO: { 'from_secret': 'telegram_to' },
         },
@@ -105,11 +95,10 @@
     steps: [
       {
         name: 'build-push',
-        image: 'golang:1.12',
+        image: 'golang:1.13',
         pull: 'always',
         environment: {
           CGO_ENABLED: '0',
-          GO111MODULE: 'on',
         },
         commands: [
           'go build -v -ldflags \'-X main.build=${DRONE_BUILD_NUMBER}\' -a -o release/' + os + '/' + arch + '/' + name,
@@ -122,11 +111,10 @@
       },
       {
         name: 'build-tag',
-        image: 'golang:1.12',
+        image: 'golang:1.13',
         pull: 'always',
         environment: {
           CGO_ENABLED: '0',
-          GO111MODULE: 'on',
         },
         commands: [
           'go build -v -ldflags \'-X main.version=${DRONE_TAG##v} -X main.build=${DRONE_BUILD_NUMBER}\' -a -o release/' + os + '/' + arch + '/' + name,
@@ -137,7 +125,7 @@
       },
       {
         name: 'executable',
-        image: 'golang:1.12',
+        image: 'golang:1.13',
         pull: 'always',
         commands: [
           './release/' + os + '/' + arch + '/' + name + ' --help',
@@ -202,11 +190,8 @@
     steps: [
       {
         name: 'build-all-binary',
-        image: 'golang:1.12',
+        image: 'golang:1.13',
         pull: 'always',
-        environment: {
-          GO111MODULE: 'on',
-        },
         commands: [
           'make release'
         ],