1 files changed, 1 insertions, 1 deletions

diff --git a/beamer/slides.md b/beamer/slides.md
index 2a70071..327e11d 100644
--- a/beamer/slides.md
+++ b/beamer/slides.md
@@ -51,7 +51,7 @@ Much content
 \tcbset{title=My Title}
 ```
 
-```haskell
+```{.haskell highlightlines=3-4}
 main :: IO ()
 main = print . md5 . pack . unwords =<< getArgs
   where