diff --git a/imgui-sys/src/lib.rs b/imgui-sys/src/lib.rs
index 654e27487..72dc86995 100644
--- a/imgui-sys/src/lib.rs
+++ b/imgui-sys/src/lib.rs
@@ -946,6 +946,7 @@ extern "C" {
     pub fn igGetDrawData() -> *mut ImDrawData;
     pub fn igNewFrame();
     pub fn igRender();
+    pub fn igEndFrame();
     pub fn igShutdown();
 }