diff --git a/_plugins/knit.r b/_plugins/knit.r
index 0d0f1ce..30466ea 100755
--- a/_plugins/knit.r
+++ b/_plugins/knit.r
@@ -1,4 +1,5 @@
-#!/usr/bin/Rscript
+#!/usr/bin/env Rscript
+
 library(rmarkdown)
 library(bookdown)
 library(methods)