diff --git a/.tool-versions b/.tool-versions
index 1be9fd0..79d8662 100644
--- a/.tool-versions
+++ b/.tool-versions
@@ -2,6 +2,6 @@
 # - https://github.com/erlef/setup-beam?tab=readme-ov-file#strict-versions
 # - https://github.com/erlef/setup-beam?tab=readme-ov-file#version-file
 
-erlang 28.3.3
+erlang 28.4
 gleam 1.14.0
 rebar 3.27.0