diff --git a/src/kemal/helpers/helpers.cr b/src/kemal/helpers/helpers.cr
index 7baf851..7f14755 100644
--- a/src/kemal/helpers/helpers.cr
+++ b/src/kemal/helpers/helpers.cr
@@ -1,3 +1,5 @@
+require "flate"
+require "gzip"
 require "mime"
 
 # Adds given `Kemal::Handler` to handlers chain.