diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
index 2a50c77d..1c0dded3 100644
--- a/docs/CHANGELOG.txt
+++ b/docs/CHANGELOG.txt
@@ -36,6 +36,15 @@ HOW TO UPDATE?
 - Please report any issue!
 
 
+-----------------------------------------------------------------------
+ VERSION 1.90 WIP (In Progress)
+-----------------------------------------------------------------------
+
+Breaking changes:
+
+Other changes:
+
+
 -----------------------------------------------------------------------
  VERSION 1.89.9 (Released 2023-09-04)
 -----------------------------------------------------------------------
diff --git a/imgui.cpp b/imgui.cpp
index 07e4ad5a..1a9267bc 100644
--- a/imgui.cpp
+++ b/imgui.cpp
@@ -1,4 +1,4 @@
-// dear imgui, v1.89.9
+// dear imgui, v1.90 WIP
 // (main code and documentation)
 
 // Help:
diff --git a/imgui.h b/imgui.h
index c7f53448..c390b91a 100644
--- a/imgui.h
+++ b/imgui.h
@@ -1,4 +1,4 @@
-// dear imgui, v1.89.9
+// dear imgui, v1.90 WIP
 // (headers)
 
 // Help:
@@ -25,8 +25,8 @@
 
 // Library Version
 // (Integer encoded as XYYZZ for use in #if preprocessor conditionals, e.g. '#if IMGUI_VERSION_NUM >= 12345')
-#define IMGUI_VERSION       "1.89.9"
-#define IMGUI_VERSION_NUM   18990
+#define IMGUI_VERSION       "1.90 WIP"
+#define IMGUI_VERSION_NUM   18991
 #define IMGUI_HAS_TABLE
 
 /*
diff --git a/imgui_demo.cpp b/imgui_demo.cpp
index ab529e37..6d4b86a0 100644
--- a/imgui_demo.cpp
+++ b/imgui_demo.cpp
@@ -1,4 +1,4 @@
-// dear imgui, v1.89.9
+// dear imgui, v1.90 WIP
 // (demo code)
 
 // Help:
diff --git a/imgui_draw.cpp b/imgui_draw.cpp
index 205ce76f..1332a52d 100644
--- a/imgui_draw.cpp
+++ b/imgui_draw.cpp
@@ -1,4 +1,4 @@
-// dear imgui, v1.89.9
+// dear imgui, v1.90 WIP
 // (drawing and font code)
 
 /*
diff --git a/imgui_internal.h b/imgui_internal.h
index 70a62334..7f6dbe35 100644
--- a/imgui_internal.h
+++ b/imgui_internal.h
@@ -1,4 +1,4 @@
-// dear imgui, v1.89.9
+// dear imgui, v1.90 WIP
 // (internal structures/api)
 
 // You may use this file to debug, understand or extend Dear ImGui features but we don't provide any guarantee of forward compatibility.
diff --git a/imgui_tables.cpp b/imgui_tables.cpp
index 8fdcbcf8..c4026ce3 100644
--- a/imgui_tables.cpp
+++ b/imgui_tables.cpp
@@ -1,4 +1,4 @@
-// dear imgui, v1.89.9
+// dear imgui, v1.90 WIP
 // (tables and columns code)
 
 /*