diff --git a/tests/default.nix b/tests/default.nix
index 315ee22..2ef67cb 100644
--- a/tests/default.nix
+++ b/tests/default.nix
@@ -41,4 +41,5 @@ in
 
   checksTest = mkOutputTest "checks";
 
+  devShellTest = fullFlake.devShell.${pkgs.system};
 }
diff --git a/tests/fullFlake/default.nix b/tests/fullFlake/default.nix
index bd31010..d66556b 100644
--- a/tests/fullFlake/default.nix
+++ b/tests/fullFlake/default.nix
@@ -34,6 +34,8 @@ let
       })
     ];
 
+    devshell.modules = [ ./devshell.toml ];
+
     nixos = {
       hostDefaults = {
         system = "x86_64-linux";
diff --git a/tests/fullFlake/devshell.toml b/tests/fullFlake/devshell.toml
new file mode 100644
index 0000000..2deae10
--- /dev/null
+++ b/tests/fullFlake/devshell.toml
@@ -0,0 +1,5 @@
+[devshell]
+
+packages = [
+  "mdbook",
+]