diff --git a/.tool-versions b/.tool-versions
new file mode 100644
index 0000000..1a59aeb
--- /dev/null
+++ b/.tool-versions
@@ -0,0 +1 @@
+golang 1.23.0
diff --git a/go.mod b/go.mod
index 683ccc6..a1d9878 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module cash2ynab
 
-go 1.21
+go 1.23
 
 require github.com/stretchr/testify v1.9.0