diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
index 7232b97..40cd4e0 100644
--- a/docs/CHANGELOG.txt
+++ b/docs/CHANGELOG.txt
@@ -488,6 +488,7 @@
   tree depth instead of a relative one.
 - Log/Capture: Fixed CollapsingHeader trailing ascii representation being "#" instead of "##".
 - ImFont: Added GetGlyphRangesVietnamese() helper. (#2403)
+- Misc: ImVector: Added operator[] taking a size_t index.
 - Misc: Asserting in NewFrame() if style.WindowMinSize is zero or smaller than (1.0f,1.0f).
 - Demo: Using GetBackgroundDrawList() and GetForegroundDrawList() in "Custom Rendering" demo.
 - Demo: InputText: Demonstrating use of ImGuiInputTextFlags_CallbackResize. (#2006, #1443, #1008).
diff --git a/imgui.h b/imgui.h
index 9fcdaea..6282023 100644
--- a/imgui.h
+++ b/imgui.h
@@ -1258,6 +1258,8 @@
     inline int          capacity() const                    { return Capacity; }
     inline T&           operator[](int i)                   { IM_ASSERT(i < Size); return Data[i]; }
     inline const T&     operator[](int i) const             { IM_ASSERT(i < Size); return Data[i]; }
+    inline T&           operator[](size_t i)                { IM_ASSERT(i < (size_t)Size); return Data[i]; }
+    inline const T&     operator[](size_t i) const          { IM_ASSERT(i < (size_t)Size); return Data[i]; }
 
     inline void         clear()                             { if (Data) { Size = Capacity = 0; IM_FREE(Data); Data = NULL; } }
     inline T*           begin()                             { return Data; }