diff --git a/.gitmodules b/.gitmodules
index 241c169c4..5723b4758 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -6,3 +6,6 @@
 	path = tests/evm-benchmarks
 	url = https://github.com/ipsilon/evm-benchmarks
 	shallow = true
+[submodule "foundry/projects/local-private-network/Stateful/lib/ds-test"]
+	path = foundry/projects/local-private-network/Stateful/lib/ds-test
+	url = https://github.com/dapphub/ds-test
diff --git a/foundry/projects/local-private-network/Stateful/lib/ds-test b/foundry/projects/local-private-network/Stateful/lib/ds-test
new file mode 160000
index 000000000..0a5da56b0
--- /dev/null
+++ b/foundry/projects/local-private-network/Stateful/lib/ds-test
@@ -0,0 +1 @@
+Subproject commit 0a5da56b0d65960e6a994d2ec8245e6edd38c248