diff --git a/CHANGELOG.md b/CHANGELOG.md
index 596f1a3e..873e337e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ NOTE: [`epaint`](epaint/CHANGELOG.md), [`eframe`](eframe/CHANGELOG.md), [`egui-w
 ## Unreleased
 
 
+## 0.18.1 - 2022-05-01
+* Change `Shape::Callback` from `&dyn Any` to `&mut dyn Any` to support more backends.
+
+
 ## 0.18.0 - 2022-04-30
 
 ### Added ⭐
diff --git a/Cargo.lock b/Cargo.lock
index 06f3d5ab..9bcdb912 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1100,7 +1100,7 @@ dependencies = [
 
 [[package]]
 name = "egui"
-version = "0.18.0"
+version = "0.18.1"
 dependencies = [
  "ahash 0.7.6",
  "epaint",
@@ -1286,7 +1286,7 @@ dependencies = [
 
 [[package]]
 name = "epaint"
-version = "0.18.0"
+version = "0.18.1"
 dependencies = [
  "ab_glyph",
  "ahash 0.7.6",
diff --git a/egui/Cargo.toml b/egui/Cargo.toml
index 4a5e187a..1d28c1e0 100644
--- a/egui/Cargo.toml
+++ b/egui/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "egui"
-version = "0.18.0"
+version = "0.18.1"
 authors = ["Emil Ernerfeldt <emil.ernerfeldt@gmail.com>"]
 description = "An easy-to-use immediate mode GUI that runs on both web and native"
 edition = "2021"
@@ -48,7 +48,7 @@ serde = ["dep:serde", "epaint/serde"]
 
 
 [dependencies]
-epaint = { version = "0.18.0", path = "../epaint", default-features = false }
+epaint = { version = "0.18.1", path = "../epaint", default-features = false }
 
 ahash = "0.7"
 nohash-hasher = "0.2"
diff --git a/epaint/CHANGELOG.md b/epaint/CHANGELOG.md
index 08084dfe..e0a42144 100644
--- a/epaint/CHANGELOG.md
+++ b/epaint/CHANGELOG.md
@@ -5,6 +5,10 @@ All notable changes to the epaint crate will be documented in this file.
 ## Unreleased
 
 
+## 0.18.1 - 2022-05-01
+* Change `Shape::Callback` from `&dyn Any` to `&mut dyn Any` to support more backends.
+
+
 ## 0.18.0 - 2022-04-30
 * MSRV (Minimum Supported Rust Version) is now `1.60.0` ([#1467](https://github.com/emilk/egui/pull/1467)).
 * Add `Shape::Callback` for backend-specific painting ([#1351](https://github.com/emilk/egui/pull/1351)).
diff --git a/epaint/Cargo.toml b/epaint/Cargo.toml
index 598b875a..1c1ff6be 100644
--- a/epaint/Cargo.toml
+++ b/epaint/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "epaint"
-version = "0.18.0"
+version = "0.18.1"
 authors = ["Emil Ernerfeldt <emil.ernerfeldt@gmail.com>"]
 description = "Minimal 2D graphics library for GUI work"
 edition = "2021"
diff --git a/epaint/src/shape.rs b/epaint/src/shape.rs
index 8660e5df..90b93596 100644
--- a/epaint/src/shape.rs
+++ b/epaint/src/shape.rs
@@ -754,12 +754,12 @@ pub struct PaintCallback {
     ///
     /// The rendering backend is also responsible for restoring any state,
     /// such as the bound shader program and vertex array.
-    pub callback: Arc<dyn Fn(&PaintCallbackInfo, &dyn std::any::Any) + Send + Sync>,
+    pub callback: Arc<dyn Fn(&PaintCallbackInfo, &mut dyn std::any::Any) + Send + Sync>,
 }
 
 impl PaintCallback {
     #[inline]
-    pub fn call(&self, info: &PaintCallbackInfo, render_ctx: &dyn std::any::Any) {
+    pub fn call(&self, info: &PaintCallbackInfo, render_ctx: &mut dyn std::any::Any) {
         (self.callback)(info, render_ctx);
     }
 }