diff --git a/.gitignore b/.gitignore
index e5e7261e..57510a2b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1 @@
 _site/
-.ruby-version
diff --git a/.ruby-version b/.ruby-version
new file mode 100644
index 00000000..35cee72d
--- /dev/null
+++ b/.ruby-version
@@ -0,0 +1 @@
+2.4.3