diff --git a/doc/hacking.md b/doc/hacking.md
index eb32c452..0950a164 100644
--- a/doc/hacking.md
+++ b/doc/hacking.md
@@ -58,6 +58,12 @@ sudo apt-get -y build-dep .
 
 For an explicit list of dependencies check the `Build-Depends` entry in the [`debian/control`](debian/control) file.
 
+Note: Some build-dependencies are currently unavailable in Debian Testing.
+To be able to install the build-dependencies with the previously mentioned commands anyway,
+rename `control` in the `debian`-folder to `control.original`,
+and `control.debian-testing` to `control` before using those commands.
+The remaining dependencies will then be downloaded by `cargo` when building Squeekboard.
+
 Testing
 -------