diff --git a/doc/changelog.rst b/doc/changelog.rst
index adf5e2ac..cf34d0d9 100644
--- a/doc/changelog.rst
+++ b/doc/changelog.rst
@@ -25,6 +25,7 @@ General
   See :ref:`mju_cholFactorBand` documentation for details.
 - Added :ref:`mj_multiRay` function for intersecting multiple rays emanating from a single point.
   This is significantly faster than calling :ref:`mj_ray` multiple times.
+- Increased ``mjMAXUIITEM`` (maximum number of UI elements per section in Simulate) to 100.
 
 Version 2.3.5 (April 25, 2023)
 ------------------------------
diff --git a/include/mujoco/mjui.h b/include/mujoco/mjui.h
index 78eadc12..7246e5a8 100644
--- a/include/mujoco/mjui.h
+++ b/include/mujoco/mjui.h
@@ -18,7 +18,7 @@
 #include <mujoco/mjrender.h>
 
 #define mjMAXUISECT     10      // maximum number of sections
-#define mjMAXUIITEM     80      // maximum number of items per section
+#define mjMAXUIITEM     100     // maximum number of items per section
 #define mjMAXUITEXT     300     // maximum number of chars in edittext and other
 #define mjMAXUINAME     40      // maximum number of chars in name
 #define mjMAXUIMULTI    35      // maximum number of radio/select items in group
diff --git a/introspect/structs.py b/introspect/structs.py
index ed21de7a..7188886c 100644
--- a/introspect/structs.py
+++ b/introspect/structs.py
@@ -7199,7 +7199,7 @@ STRUCTS: Mapping[str, StructDecl] = dict([
                  name='item',
                  type=ArrayType(
                      inner_type=ValueType(name='mjuiItem'),
-                     extents=(80,),
+                     extents=(100,),
                  ),
                  doc='preallocated array of items',
              ),
diff --git a/unity/Runtime/Bindings/MjBindings.cs b/unity/Runtime/Bindings/MjBindings.cs
index cac3cd88..8280be3f 100644
--- a/unity/Runtime/Bindings/MjBindings.cs
+++ b/unity/Runtime/Bindings/MjBindings.cs
@@ -59,7 +59,7 @@ public const bool mjUSEDOUBLE = true;
 public const double mjMINVAL = 1e-15;
 public const bool THIRD_PARTY_MUJOCO_MJUI_H_ = true;
 public const int mjMAXUISECT = 10;
-public const int mjMAXUIITEM = 80;
+public const int mjMAXUIITEM = 100;
 public const int mjMAXUITEXT = 300;
 public const int mjMAXUINAME = 40;
 public const int mjMAXUIMULTI = 35;