diff --git a/pkgs/development/beam-modules/ex_doc/default.nix b/pkgs/development/beam-modules/ex_doc/default.nix
index d0f121b41aa1..3d1f5a0e6320 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 = "0.39.0";
+  version = "0.39.1";
   src = fetchFromGitHub {
     owner = "elixir-lang";
     repo = "${pname}";
     rev = "v${version}";
-    hash = "sha256-7f4TQgQIeWb+SRMYLsqnOWnPHY7Pqi8qtruVe8OaZRY=";
+    hash = "sha256-edK484d5Fn5Kb/UEV1g3XinFF1rQJ1DypLEueET//Bg=";
   };
 in
 mixRelease {