diff --git a/.gitignore b/.gitignore
index 0c333d2..aa3e390 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 compile.bat
 obj
+gbdk
diff --git a/.gitmodules b/.gitmodules
index 6fdf0fc..e69de29 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +0,0 @@
-[submodule "gbdk-2020"]
-	path = gbdk-2020
-	url = https://github.com/gbdk-2020/gbdk-2020.git
diff --git a/Makefile b/Makefile
index f172daa..bc6e230 100644
--- a/Makefile
+++ b/Makefile
@@ -5,7 +5,7 @@
 
 # If you move this project you can change the directory 
 # to match your GBDK root directory (ex: GBDK_HOME = "C:/GBDK/"
-GBDK_HOME = ./gbdk-2020/
+GBDK_HOME = ./gbdk/
 
 LCC = $(GBDK_HOME)bin/lcc 
 
diff --git a/gbdk-2020 b/gbdk-2020
deleted file mode 160000
index 48265b8..0000000
--- a/gbdk-2020
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 48265b8e171f04d5fe98f95f2aecd11830cb632c
diff --git a/readme.md b/readme.md
index 7985bcb..c128e0b 100644
--- a/readme.md
+++ b/readme.md
@@ -6,11 +6,8 @@ i don't know what i'm doing
 
 ## compile
 
-first clone submodules:
-
-```
-git submodule init && git submodule update
-```
+first download [gbdk version 4.0.6](https://github.com/gbdk-2020/gbdk-2020/releases/tag/4.0.6) and
+extract the release to the folder `<PROJECT ROOT>/gbdk`
 
 and then compile the game