diff --git a/pkgs/development/beam-modules/ex_doc/default.nix b/pkgs/development/beam-modules/ex_doc/default.nix
index b7dd0afd2da1..8dc542f203dd 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 = "0.40.1";
+  version = "0.40.3";
   src = fetchFromGitHub {
     owner = "elixir-lang";
     repo = "${pname}";
     rev = "v${version}";
-    hash = "sha256-ZhsN2XI5WVy04ilNR/7NJo+C7F10lijsP+n3BGBNEkQ=";
+    hash = "sha256-xGZCBnjYr+0x6JNcf0XZVdaKaUB8V72GuZI3lEunzic=";
   };
 in
 mixRelease {
@@ -37,7 +37,7 @@ mixRelease {
   mixFodDeps = fetchMixDeps {
     pname = "mix-deps-${pname}";
     inherit src version elixir;
-    hash = "sha256-pMIm0lVMqkuiprp0XeVB+x4VTh+hQR3t8dk5OBmnIqA=";
+    hash = "sha256-FSLAQhFk7NCUXRMfNr6E9XvndrviapjcKZDisHbB87Y=";
   };
 
   passthru = {