diff --git a/src/libexec/rsdk/rsdk-setup b/src/libexec/rsdk/rsdk-setup
index cc9ddc8..a3ad21a 100755
--- a/src/libexec/rsdk/rsdk-setup
+++ b/src/libexec/rsdk/rsdk-setup
@@ -107,10 +107,9 @@ nix registry add devenv github:cachix/devenv
 (yes || true) | nix profile install --accept-flake-config devenv#default
 
 devenv shell npm install @devcontainers/cli
+devenv shell cargo install mdbook-cmdrun
 trap - EXIT
 
-cargo install mdbook-cmdrun
-
 RSDK_COMPLETION_DIR="${BASH_COMPLETION_USER_DIR:-${XDG_DATA_HOME:-$HOME/.local/share}/bash-completion}/completions"
 mkdir -p "$RSDK_COMPLETION_DIR"
 rm -f "$RSDK_COMPLETION_DIR/rsdk"