diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
index 176730224..91c5b5de7 100644
--- a/docs/CHANGELOG.txt
+++ b/docs/CHANGELOG.txt
@@ -29,6 +29,11 @@ HOW TO UPDATE?
 - Please report any issue!
 
 
+-----------------------------------------------------------------------
+ VERSION 1.66 (In Progress)
+-----------------------------------------------------------------------
+
+
 -----------------------------------------------------------------------
  VERSION 1.65 (Released 2018-09-06)
 -----------------------------------------------------------------------
diff --git a/imgui.cpp b/imgui.cpp
index e6a9bc1af..f14dfc502 100644
--- a/imgui.cpp
+++ b/imgui.cpp
@@ -1,4 +1,4 @@
-// dear imgui, v1.65
+// dear imgui, v1.66 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 26c8887c1..991c20fc5 100644
--- a/imgui.h
+++ b/imgui.h
@@ -1,4 +1,4 @@
-// dear imgui, v1.65
+// dear imgui, v1.66 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               "1.65"
-#define IMGUI_VERSION_NUM           16501
+#define IMGUI_VERSION               "1.66 WIP"
+#define IMGUI_VERSION_NUM           16600
 #define IMGUI_CHECKVERSION()        ImGui::DebugCheckVersionAndDataLayout(IMGUI_VERSION, sizeof(ImGuiIO), sizeof(ImGuiStyle), sizeof(ImVec2), sizeof(ImVec4), sizeof(ImDrawVert))
 
 // Define attributes of all API symbols declarations (e.g. for DLL under Windows)
diff --git a/imgui_demo.cpp b/imgui_demo.cpp
index de891bec1..2cce0dd9e 100644
--- a/imgui_demo.cpp
+++ b/imgui_demo.cpp
@@ -1,4 +1,4 @@
-// dear imgui, v1.65
+// dear imgui, v1.66 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 3afcac4e9..dd30b4766 100644
--- a/imgui_draw.cpp
+++ b/imgui_draw.cpp
@@ -1,4 +1,4 @@
-// dear imgui, v1.65
+// dear imgui, v1.66 WIP
 // (drawing and font code)
 
 /*
diff --git a/imgui_internal.h b/imgui_internal.h
index 050f2acf2..cedf1c32a 100644
--- a/imgui_internal.h
+++ b/imgui_internal.h
@@ -1,4 +1,4 @@
-// dear imgui, v1.65
+// dear imgui, v1.66 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!
diff --git a/imgui_widgets.cpp b/imgui_widgets.cpp
index 110c4f864..f264396e3 100644
--- a/imgui_widgets.cpp
+++ b/imgui_widgets.cpp
@@ -1,4 +1,4 @@
-// dear imgui, v1.65
+// dear imgui, v1.66 WIP
 // (widgets code)
 
 /*