diff --git a/pkgs/development/beam-modules/ex_doc/default.nix b/pkgs/development/beam-modules/ex_doc/default.nix
index bd7a4cee09ee..5263899d4221 100644
--- a/pkgs/development/beam-modules/ex_doc/default.nix
+++ b/pkgs/development/beam-modules/ex_doc/default.nix
@@ -14,12 +14,12 @@
 
 let
   pname = "ex_doc";
-  version = "0.38.3";
+  version = "0.38.4";
   src = fetchFromGitHub {
     owner = "elixir-lang";
     repo = "${pname}";
     rev = "v${version}";
-    hash = "sha256-mi8AE9LfmWtgiVvoaH7aZy0/KlUvneiyEqop6015b2E=";
+    hash = "sha256-/gZczKm/IF5QQemrdcda9oKVIGDFSqdiu8YrBwT6Mtk=";
   };
 in
 mixRelease {