diff --git a/pkgs/by-name/mu/mujoco/package.nix b/pkgs/by-name/mu/mujoco/package.nix
index c36b37a520a5..6b2f93e71eae 100644
--- a/pkgs/by-name/mu/mujoco/package.nix
+++ b/pkgs/by-name/mu/mujoco/package.nix
@@ -82,7 +82,7 @@ let
 in
 stdenv.mkDerivation (finalAttrs: {
   pname = "mujoco";
-  version = "3.8.0";
+  version = "3.8.1";
 
   __structuredAttrs = true;
   strictDeps = true;
@@ -93,7 +93,7 @@ stdenv.mkDerivation (finalAttrs: {
     owner = "google-deepmind";
     repo = "mujoco";
     tag = finalAttrs.version;
-    hash = "sha256-X/Aqab5CZX+HbGLZBgtGB08XaNno5883c2yLuRRSkAM=";
+    hash = "sha256-eoZblIIH+tUNKPdVERGh1dE0KoWwMpP0LA6FgcJCiNU=";
   };
 
   patches = [
diff --git a/pkgs/development/python-modules/mujoco/default.nix b/pkgs/development/python-modules/mujoco/default.nix
index d48c6c86b82b..d41a61e80996 100644
--- a/pkgs/development/python-modules/mujoco/default.nix
+++ b/pkgs/development/python-modules/mujoco/default.nix
@@ -38,7 +38,7 @@ buildPythonPackage (finalAttrs: {
   # in the project's CI.
   src = fetchPypi {
     inherit (finalAttrs) pname version;
-    hash = "sha256-JQr+V0WNaIGy12WfoAKaEoy1fLu2ICaNlWR/ua10IYM=";
+    hash = "sha256-AZoLNAaJK8mEVOr1XL0n+F0Wd1iteF93xgimHzo0rRc=";
   };
 
   nativeBuildInputs = [ cmake ];