diff --git a/.github/workflows/go.yml b/.github/workflows/go.yml
index 9e48ab7..fa26ddb 100644
--- a/.github/workflows/go.yml
+++ b/.github/workflows/go.yml
@@ -11,7 +11,7 @@ jobs:
   test:
     strategy:
       matrix:
-        go-version: [1.12.x, 1.20.x]
+        go-version: [1.19.x, 1.20.x]
         platform: [ubuntu-latest, macos-latest, windows-latest]
     runs-on: ${{ matrix.platform }}
     steps:
diff --git a/go.mod b/go.mod
index 194607f..5670651 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/personnummer/go/v3
 
-go 1.19
+go 1.20
 
 require (
 	github.com/frozzare/go v1.0.0