diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index ec368b6..b61f87d 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -5,7 +5,7 @@
     "test": {
       "strategy": {
         "matrix": {
-          "go-version": ["1.18.x", "1.21.x"],
+          "go-version": ["1.19.x", "1.22.x"],
           "os":         ["ubuntu-latest", "macos-latest", "windows-latest"]
         }
       },
diff --git a/README.md b/README.md
index dd8f301..30e45ef 100644
--- a/README.md
+++ b/README.md
@@ -27,7 +27,7 @@ should run in most environments. It's recommended you use a binary, or a tagged
 release if you build from source especially in CI environments. This prevents
 your tests from breaking on changes to tests in this tool.
 
-To compile from source you will need Go 1.18 or newer:
+To compile from source you will need Go 1.19 or newer:
 
     % go install github.com/toml-lang/toml-test/cmd/toml-test@latest
 
diff --git a/go.mod b/go.mod
index 9ce9618..6d685a0 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/toml-lang/toml-test
 
-go 1.18
+go 1.19
 
 require (
 	github.com/BurntSushi/toml v1.4.0