diff --git a/.crystal-version b/.crystal-version
index bc80560..a8fdfda 100644
--- a/.crystal-version
+++ b/.crystal-version
@@ -1 +1 @@
-1.5.0
+1.8.1
diff --git a/shard.yml b/shard.yml
index 2435671..a5cda11 100644
--- a/shard.yml
+++ b/shard.yml
@@ -8,7 +8,7 @@ targets:
   scribe:
     main: src/scribe.cr
 
-crystal: 1.5.0
+crystal: 1.8.1
 
 dependencies:
   lucky: