diff --git a/shell.nix b/shell.nix
index 701029a21a..84a6796c5f 100644
--- a/shell.nix
+++ b/shell.nix
@@ -12,6 +12,7 @@ stdenv.mkDerivation {
     gcc
     gcc-arm-embedded
     git
+    gitAndTools.git-subrepo
     gnumake
     graphviz
     libffi