diff --git a/help/Source Map.md b/help/Source Map.md
index ce47c9a..6d7a873 100644
--- a/help/Source Map.md	
+++ b/help/Source Map.md	
@@ -143,6 +143,8 @@ This file contains a list and description of the files and folders in the source
 - `util/` Contains utilities for developing and building the project.
 	- `linker/` Contains linker scripts.
 	- `w32/` The experimental W32 backend for the Essence desktop.
+	- `x11/` The experimental X11 backend for the Essence desktop.
+	- `automation/` Scripts for automating builds.
 	- `build_common.h` Common definitions shared between `build.c` and `build_core.c`.
 	- `luigi.h` [A single-header cross platform GUI library](https://github.com/nakst/luigi).
 	- `build.c` The main build system prompt, which manages dependencies, the toolchain, build configurations, and launching emulators. It is accessed by the developer by running the `start.sh` script at the root of the source tree. The developer can then issue commands to build and test the operating system and other utilities.
diff --git a/util/automation/run_tests.sh b/util/automation/run_tests.sh
index 8d99717..914355a 100755
--- a/util/automation/run_tests.sh
+++ b/util/automation/run_tests.sh
@@ -12,4 +12,5 @@ echo `git log | head -n 1 | cut -b 8-14` > bin/commit.txt
 ./start.sh get-source prefix https://github.com/nakst/build-gcc/releases/download/gcc-11.1.0/gcc-x86_64-essence.tar.xz
 ./start.sh setup-pre-built-toolchain
 ./start.sh run-tests
+util/x11/build.sh apps/samples/hello.c
 rm -rf cross .git bin/cache bin/freetype bin/harfbuzz bin/musl root/Applications/POSIX/lib bin/drive