diff --git a/.github/workflows/go.yml b/.github/workflows/go.yml
index 9ade0369..7d7e975d 100644
--- a/.github/workflows/go.yml
+++ b/.github/workflows/go.yml
@@ -7,7 +7,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest]
-        go: ["1.16.x", "1.17.x"]
+        go: ["1.17.x", "1.18.x"]
 
     steps:
       - name: Setup Go ${{ matrix.go }}
diff --git a/README.md b/README.md
index 2a048cdb..bf3f74af 100644
--- a/README.md
+++ b/README.md
@@ -28,7 +28,7 @@ See [#538](https://github.com/gopcua/opcua/issues/538) for details.
 ## Quickstart
 
 ```sh
-# make sure you have go1.13 or higher
+# make sure you have go1.17 or higher
 
 # install library
 go get -u github.com/gopcua/opcua
diff --git a/go.mod b/go.mod
index 54f50a93..bf6ef6f4 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/gopcua/opcua
 
-go 1.12
+go 1.17
 
 require (
 	github.com/pascaldekloe/goe v0.1.0