diff --git a/Cargo.toml b/Cargo.toml
index 32f08144..72c932dd 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,7 +2,7 @@
 name = "surfman"
 license = "MIT OR Apache-2.0 OR MPL-2.0"
 edition = "2021"
-version = "0.12.3"
+version = "0.12.4"
 authors = [
     "Patrick Walton <pcwalton@mimiga.net>",
     "Emilio Cobos Álvarez <emilio@crisal.io>",
diff --git a/src/cgl/device.rs b/src/cgl/device.rs
index f7474ec2..b99a503f 100644
--- a/src/cgl/device.rs
+++ b/src/cgl/device.rs
@@ -370,6 +370,12 @@ impl Device {
     /// show up in their associated widgets until this method is called.
     pub fn present_bound_surface(&self, context: &mut Context) -> Result<(), Error> {
         if let Framebuffer::Surface(surface) = &mut context.framebuffer {
+            // Presenting the surface is not a GL operation on macOS, it's just
+            // CoreAnimation and IOSurface management. This means that it will
+            // leave any unprocessed OpenGL commands in the pipeline. Flushing
+            // here ensures that doesn't happen.
+            unsafe { context.gl.flush() };
+
             self.0.present_surface(&mut surface.system_surface)?;
             surface.bind_to_texture(&context.gl);
         }