diff --git a/.gitmodules b/.gitmodules
index 03f38fd..1035188 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -25,3 +25,6 @@
 [submodule "foundry-smart-contract-lottery-cu/lib/solmate"]
 	path = foundry-smart-contract-lottery-cu/lib/solmate
 	url = https://github.com/transmissions11/solmate
+[submodule "lottery/lib/forge-std"]
+	path = lottery/lib/forge-std
+	url = https://github.com/foundry-rs/forge-std
diff --git a/lottery/lib/forge-std b/lottery/lib/forge-std
new file mode 160000
index 0000000..b93cf4b
--- /dev/null
+++ b/lottery/lib/forge-std
@@ -0,0 +1 @@
+Subproject commit b93cf4bc34ff214c099dc970b153f85ade8c9f66