diff --git a/pkgs/development/beam-modules/ex_doc/default.nix b/pkgs/development/beam-modules/ex_doc/default.nix
index d7057a6dd91c..b46d7fee6ef4 100644
--- a/pkgs/development/beam-modules/ex_doc/default.nix
+++ b/pkgs/development/beam-modules/ex_doc/default.nix
@@ -3,12 +3,12 @@
 
 let
   pname = "ex_doc";
-  version = "0.32.1";
+  version = "0.34.1";
   src = fetchFromGitHub {
     owner = "elixir-lang";
     repo = "${pname}";
     rev = "v${version}";
-    hash = "sha256-nNUSx2Ywj04vgT/7BQEwoNtTl1NGmbvuIS4KbvUFYzs=";
+    hash = "sha256-OXIRippEDYAKD222XzNJkkZdXbUkDUauv5amr4oAU7c=";
   };
 in
 mixRelease {
@@ -19,7 +19,7 @@ mixRelease {
   mixFodDeps = fetchMixDeps {
     pname = "mix-deps-${pname}";
     inherit src version elixir;
-    hash = "sha256-e0lU4TXLY2geO6MI1h0kpdwsGbEyXjIRe0W43337mHk=";
+    hash = "sha256-fYINsATbw3M3r+IVoYS14aVEsg9OBuH6mNUqzQJuDQo=";
   };
 
   configurePhase = ''