diff --git a/gleam.toml b/gleam.toml
index b3ec2d3..978c36d 100644
--- a/gleam.toml
+++ b/gleam.toml
@@ -1,6 +1,6 @@
 name = "gleam_elli"
 version = "2.4.2"
-gleam = ">= 0.32.0"
+gleam = ">= 1.4.0"
 
 licences = ["Apache-2.0"]
 description = "Run Gleam HTTP services with the Elli web server"