diff --git a/.github/workflows/main.yaml b/.github/workflows/main.yaml
index 62ecea66..406e7ac6 100644
--- a/.github/workflows/main.yaml
+++ b/.github/workflows/main.yaml
@@ -21,7 +21,7 @@ jobs:
   test:
     name: test
     runs-on: ubuntu-latest
-    container: golang:1.20-alpine3.17
+    container: golang:1.21-alpine3.17
     steps:
     - name: Install git
       run: apk add --update --no-cache git
@@ -37,7 +37,7 @@ jobs:
   build:
     name: build
     runs-on: ubuntu-latest
-    container: golang:1.20-alpine3.17
+    container: golang:1.21-alpine3.17
     strategy:
       matrix:
         os: [linux, darwin, windows]
@@ -105,7 +105,10 @@ jobs:
           "kindest/node:v1.22.15",
           "kindest/node:v1.23.13",
           "kindest/node:v1.24.7",
-          "kindest/node:v1.25.3"
+          "kindest/node:v1.25.3",
+          "kindest/node:v1.26.6",
+          "kindest/node:v1.27.3",
+          "kindest/node:v1.28.0"
         ]
     steps:
     - name: Checkout
diff --git a/Dockerfile b/Dockerfile
index e1ef0e99..05e6f568 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM --platform=$BUILDPLATFORM golang:1.20-alpine3.17 AS builder
+FROM --platform=$BUILDPLATFORM golang:1.21-alpine3.17 AS builder
 ARG GITHUB_REF GITHUB_SHA
 WORKDIR /src
 COPY go.mod go.sum ./
diff --git a/go.mod b/go.mod
index 7bc61466..9e9f24bc 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/doitintl/kube-no-trouble
 
-go 1.20
+go 1.18
 
 require (
 	github.com/ghodss/yaml v1.0.0