diff --git a/.github/workflows/linter.yaml b/.github/workflows/linter.yaml
index 09b1eb50e..1a0f27ee6 100644
--- a/.github/workflows/linter.yaml
+++ b/.github/workflows/linter.yaml
@@ -20,14 +20,14 @@ jobs:
     steps:
       - uses: actions/setup-go@v3
         with:
-          go-version: 1.19
+          go-version: 1.21
       - name: check out code
         uses: actions/checkout@v3
       - name: golangci-lint
         uses: golangci/golangci-lint-action@v3
         with:
           # Optional: version of golangci-lint to use in form of v1.2 or v1.2.3 or `latest` to use the latest version
-          version: v1.50.1
+          version: v1.55.2
 
           # Optional: golangci-lint command line arguments.
           args: --verbose --timeout=5m
diff --git a/.github/workflows/release_nightly.yaml b/.github/workflows/release_nightly.yaml
index 740c35075..23ba6364b 100644
--- a/.github/workflows/release_nightly.yaml
+++ b/.github/workflows/release_nightly.yaml
@@ -20,7 +20,7 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v3
         with:
-          go-version: 1.19.x
+          go-version: 1.21.x
       - name: Run GoReleaser
         uses: goreleaser/goreleaser-action@v2
         with:
diff --git a/.github/workflows/run_tests.yaml b/.github/workflows/run_tests.yaml
index de94790de..26041ec94 100644
--- a/.github/workflows/run_tests.yaml
+++ b/.github/workflows/run_tests.yaml
@@ -62,7 +62,7 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v3
         with:
-          go-version: 1.19.x
+          go-version: 1.21.x
 
       - name: Cache Go Modules
         uses: actions/cache@v3
diff --git a/.golangci.yml b/.golangci.yml
index 402b4a2c4..24171ef12 100644
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -40,7 +40,7 @@ linters-settings:
     extra-rules: true
 
     # Select the Go version to target.
-    lang-version: "1.19"
+    lang-version: "1.21"
 
   lll:
     # Max line length; lines longer will be reported
diff --git a/CHANGELOG.md b/CHANGELOG.md
index f29a082c2..f947f1607 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,9 @@
 - Added `tyk` to `categories` field of CRDs. So, from now on, all CRs related to Tyk Operator is grouped
 into `tyk` category and can be displayed via `kubectl get tyk`.
 
+**Updated**
+- Updated Go version to 1.21
+
 ## [v0.15.1](https://github.com/TykTechnologies/tyk-operator/tree/v0.15.1)
 [Full Changelog](https://github.com/TykTechnologies/tyk-operator/compare/v0.15.0...v0.15.1)
 
diff --git a/Dockerfile b/Dockerfile
index 51be2769e..180f8db5f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 # Build the manager binary
-FROM golang:1.19 as builder
+FROM golang:1.21 as builder
 
 WORKDIR /workspace
 # Copy the Go Modules manifests
diff --git a/controllers/ingress_controller_test.go b/controllers/ingress_controller_test.go
index 21f8fb28c..87a949195 100644
--- a/controllers/ingress_controller_test.go
+++ b/controllers/ingress_controller_test.go
@@ -64,6 +64,8 @@ func TestBuildAPIName(t *testing.T) {
 	}
 
 	for n, tc := range tests {
+		tc := tc
+
 		t.Run(n, func(t *testing.T) {
 			t.Parallel()
 			result := reconciler.buildAPIName(tc.Namespace, tc.Name, tc.Hash)
diff --git a/controllers/operatorcontext_controller_test.go b/controllers/operatorcontext_controller_test.go
index 4cd9e6366..ce87dc9a1 100644
--- a/controllers/operatorcontext_controller_test.go
+++ b/controllers/operatorcontext_controller_test.go
@@ -125,6 +125,8 @@ func TestOperatorContextDelete(t *testing.T) {
 	}
 
 	for n, tc := range tests {
+		tc := tc
+
 		t.Run(n, func(t *testing.T) {
 			t.Parallel()
 
diff --git a/go.mod b/go.mod
index 319b47227..25f5fa3ce 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/TykTechnologies/tyk-operator
 
-go 1.19
+go 1.21
 
 require (
 	github.com/TykTechnologies/graphql-go-tools v1.6.2-0.20221207092329-acdd20d63048
diff --git a/go.sum b/go.sum
index 22a99c5cb..27c57786a 100644
--- a/go.sum
+++ b/go.sum
@@ -888,6 +888,7 @@ golang.org/x/tools v0.1.0/go.mod h1:xkSsbof2nBLbhDlRMhhhyNLN/zl3eTqcnHD5viDpcZ0=
 golang.org/x/tools v0.1.10/go.mod h1:Uh6Zz+xoGYZom868N8YTex3t7RhtHDBrE8Gzo9bV56E=
 golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
 golang.org/x/tools v0.6.0 h1:BOw41kyTf3PuCW1pVQf8+Cyg8pMlkYB1oo9iJ6D/lKM=
+golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=