diff --git a/README.md b/README.md
index 9523de9..cb5592b 100644
--- a/README.md
+++ b/README.md
@@ -110,9 +110,11 @@ rl.CloseWindow()
 
 ### Compatibility
 
-raylib-lua (raylua) currently uses raylib 3.0 API.
+raylib-lua (raylua) currently uses raylib 3.1-dev API with some 3.0 API compatibility
+(see [compat.lua](https://github.com/TSnake41/raylib-lua/blob/master/src/compat.lua)).
 physac and rlgl modules are built-in by default.
-There is currently no support for raygui but it may be considered in the future.
+raygui is supported, but is minimally tested, please report any issues you have
+with raygui with raylib-lua (raylua) on GitHub or raylib Discord (#raylib-lua channel)
 
 #### Global API
 
diff --git a/makefile b/makefile
index 193ce99..4a6a85f 100644
--- a/makefile
+++ b/makefile
@@ -7,7 +7,7 @@ LUA ?= luajit/src/luajit
 WINDRES ?= windres
 
 CFLAGS += -Iluajit/src -Iraylib/src -Iraygui/src
-LDFLAGS += -Lluajit/src -Lraylib/src -lraylib
+LDFLAGS += -Lluajit/src -Lraylib -lraylib
 
 MODULES := raymath rlgl easings gestures physac raygui
 
diff --git a/raylib b/raylib
index ccdd8b5..be03613 160000
--- a/raylib
+++ b/raylib
@@ -1 +1 @@
-Subproject commit ccdd8b5f28f4aaffda2b637e9cb7602ca167ba5f
+Subproject commit be03613d1b6f9b0051d78c790f97df069150c65f
diff --git a/src/compat.lua b/src/compat.lua
index 457e902..bd5ad47 100644
--- a/src/compat.lua
+++ b/src/compat.lua
@@ -24,6 +24,9 @@ rawset(rl, "LoadImageEx", function (pixels, width, height)
   return image
 end)
 
+-- rlUnproject moved to Vector3Unproject
+rawset(rl, "rlUnproject", rl.Vector3Unproject)
+
 -- math metamethods
 local new = ffi.new
 
diff --git a/src/raylib.lua b/src/raylib.lua
index ae3ed33..8549824 100644
--- a/src/raylib.lua
+++ b/src/raylib.lua
@@ -563,7 +563,9 @@ ffi.cdef [[
     BLEND_ALPHA = 0,
     BLEND_ADDITIVE,
     BLEND_MULTIPLIED,
-    BLEND_ADD_COLORS
+    BLEND_ADD_COLORS,
+    BLEND_SUBTRACT_COLORS,
+    BLEND_CUSTOM
   } BlendMode;
 
   typedef enum {
diff --git a/tools/api.h b/tools/api.h
index 546afcb..cd36fb6 100644
--- a/tools/api.h
+++ b/tools/api.h
@@ -3,6 +3,7 @@ bool WindowShouldClose(void)
 void CloseWindow(void)
 bool IsWindowReady(void)
 bool IsWindowMinimized(void)
+bool IsWindowMaximized(void)
 bool IsWindowFocused(void)
 bool IsWindowResized(void)
 bool IsWindowHidden(void)
@@ -10,6 +11,10 @@ bool IsWindowFullscreen(void)
 void ToggleFullscreen(void)
 void UnhideWindow(void)
 void HideWindow(void)
+void DecorateWindow(void)
+void UndecorateWindow(void)
+void MaximizeWindow(void)
+void RestoreWindow(void)
 void SetWindowIcon(Image image)
 void SetWindowTitle(const char *title)
 void SetWindowPosition(int x, int y)
diff --git a/tools/raymath.h b/tools/raymath.h
index e9b5274..d12db3a 100644
--- a/tools/raymath.h
+++ b/tools/raymath.h
@@ -88,3 +88,4 @@ void QuaternionToAxisAngle(Quaternion q, Vector3 *outAxis, float *outAngle)
 Quaternion QuaternionFromEuler(float roll, float pitch, float yaw)
 Vector3 QuaternionToEuler(Quaternion q)
 Quaternion QuaternionTransform(Quaternion q, Matrix mat)
+Vector3 Vector3Unproject(Vector3 source, Matrix projection, Matrix view)
diff --git a/tools/rlgl.h b/tools/rlgl.h
index 96420ca..21fb70f 100644
--- a/tools/rlgl.h
+++ b/tools/rlgl.h
@@ -49,8 +49,8 @@ void rlCheckErrors(void)
 int rlGetVersion(void)
 bool rlCheckBufferLimit(int vCount)
 void rlSetDebugMarker(const char *text)
+void rlSetBlendMode(int glSrcFactor, int glDstFactor, int glEquation)
 void rlLoadExtensions(void *loader)
-Vector3 rlUnproject(Vector3 source, Matrix proj, Matrix view)
 unsigned int rlLoadTexture(void *data, int width, int height, int format, int mipmapCount)
 unsigned int rlLoadTextureDepth(int width, int height, int bits, bool useRenderBuffer)
 unsigned int rlLoadTextureCubemap(void *data, int size, int format)