diff --git a/.ruby-version b/.ruby-version
new file mode 100644
index 00000000..aedc15bb
--- /dev/null
+++ b/.ruby-version
@@ -0,0 +1 @@
+2.5.3
diff --git a/_layouts/main.html b/_layouts/main.html
index 29e957c5..a167f721 100644
--- a/_layouts/main.html
+++ b/_layouts/main.html
@@ -15,4 +15,5 @@