diff --git a/CHANGELOG.txt b/CHANGELOG.txt
index 2b873373..783454d3 100644
--- a/CHANGELOG.txt
+++ b/CHANGELOG.txt
@@ -29,6 +29,11 @@ HOW TO UPDATE?
 - Please report any issue!
 
 
+-----------------------------------------------------------------------
+ VERSION 1.64 (in progress)
+-----------------------------------------------------------------------
+
+
 -----------------------------------------------------------------------
  VERSION 1.63 (Released 2018-08-29)
 -----------------------------------------------------------------------
diff --git a/imgui.cpp b/imgui.cpp
index 15900c04..9c323398 100644
--- a/imgui.cpp
+++ b/imgui.cpp
@@ -1,4 +1,4 @@
-// dear imgui, v1.63
+// dear imgui, v1.64 WIP
 // (main code and documentation)
 
 // Call and read ImGui::ShowDemoWindow() in imgui_demo.cpp for demo code.
diff --git a/imgui.h b/imgui.h
index a4ef7c63..581dd86b 100644
--- a/imgui.h
+++ b/imgui.h
@@ -1,4 +1,4 @@
-// dear imgui, v1.63
+// dear imgui, v1.64 WIP
 // (headers)
 
 // See imgui.cpp file for documentation.
@@ -23,8 +23,8 @@
 
 // Version
 // (Integer encoded as XYYZZ for use in #if preprocessor conditionals. Work in progress versions typically starts at XYY00 then bounced up to XYY01 when release tagging happens)
-#define IMGUI_VERSION               "1.63"
-#define IMGUI_VERSION_NUM           16301
+#define IMGUI_VERSION               "1.64 WIP"
+#define IMGUI_VERSION_NUM           16400
 #define IMGUI_CHECKVERSION()        ImGui::DebugCheckVersionAndDataLayout(IMGUI_VERSION, sizeof(ImGuiIO), sizeof(ImGuiStyle), sizeof(ImVec2), sizeof(ImVec4), sizeof(ImDrawVert))
 #define IMGUI_HAS_VIEWPORT          1 // Viewport WIP branch
 
diff --git a/imgui_demo.cpp b/imgui_demo.cpp
index 6c104b5e..27239568 100644
--- a/imgui_demo.cpp
+++ b/imgui_demo.cpp
@@ -1,4 +1,4 @@
-// dear imgui, v1.63
+// dear imgui, v1.64 WIP
 // (demo code)
 
 // Message to the person tempted to delete this file when integrating ImGui into their code base:
diff --git a/imgui_draw.cpp b/imgui_draw.cpp
index 36921874..c7053056 100644
--- a/imgui_draw.cpp
+++ b/imgui_draw.cpp
@@ -1,4 +1,4 @@
-// dear imgui, v1.63
+// dear imgui, v1.64 WIP
 // (drawing and font code)
 
 // Contains implementation for
diff --git a/imgui_internal.h b/imgui_internal.h
index 696855c6..cf5163ba 100644
--- a/imgui_internal.h
+++ b/imgui_internal.h
@@ -1,4 +1,4 @@
-// dear imgui, v1.63
+// dear imgui, v1.64 WIP
 // (internal structures/api)
 
 // You may use this file to debug, understand or extend ImGui features but we don't provide any guarantee of forward compatibility!