diff --git a/.gitmodules b/.gitmodules
index ccb2c55e3..3a33b90b5 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -142,3 +142,6 @@
 	url = https://github.com/status-im/nimbus-build-system.git
 	ignore = dirty
 	branch = master
+[submodule "vendor/ethash"]
+	path = vendor/ethash
+	url = https://github.com/status-im/nim-ethash
diff --git a/vendor/ethash b/vendor/ethash
new file mode 160000
index 000000000..10c9ec2ff
--- /dev/null
+++ b/vendor/ethash
@@ -0,0 +1 @@
+Subproject commit 10c9ec2ff745be1771fd08a59b9eff63f1196c3a