diff --git a/cmake/MujocoDependencies.cmake b/cmake/MujocoDependencies.cmake
index 4e3e2c8d..87bb13a7 100644
--- a/cmake/MujocoDependencies.cmake
+++ b/cmake/MujocoDependencies.cmake
@@ -39,7 +39,7 @@ set(MUJOCO_DEP_VERSION_qhull
     CACHE STRING "Version of `qhull` to be fetched."
 )
 set(MUJOCO_DEP_VERSION_Eigen3
-    e8515f78ac098329ab9f8cab21c87caede090a3f
+    aa6964bf3a34fd607837dd8123bc42465185c4f8
     CACHE STRING "Version of `Eigen3` to be fetched."
 )
 
diff --git a/python/mujoco/CMakeLists.txt b/python/mujoco/CMakeLists.txt
index 2505c88b..064f087b 100644
--- a/python/mujoco/CMakeLists.txt
+++ b/python/mujoco/CMakeLists.txt
@@ -173,7 +173,7 @@ findorfetch(
   GIT_REPO
   https://gitlab.com/libeigen/eigen
   GIT_TAG
-  e8515f78ac098329ab9f8cab21c87caede090a3f
+  aa6964bf3a34fd607837dd8123bc42465185c4f8
   TARGETS
   Eigen3::Eigen
   EXCLUDE_FROM_ALL