diff --git a/.gitmodules b/.gitmodules
index dce39223..ceab9072 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -244,3 +244,8 @@
 [submodule "vendor/nim-goldilocks-hash"]
 	path = vendor/nim-goldilocks-hash
 	url = https://github.com/codex-storage/nim-goldilocks-hash.git
+	ignore = untracked
+	branch = master
+[submodule "vendor/circom-witnessgen"]
+	path = vendor/circom-witnessgen
+	url = https://github.com/codex-storage/circom-witnessgen.git
diff --git a/vendor/circom-witnessgen b/vendor/circom-witnessgen
new file mode 160000
index 00000000..2420269d
--- /dev/null
+++ b/vendor/circom-witnessgen
@@ -0,0 +1 @@
+Subproject commit 2420269dc47ed2cdf376051976e7c61310f48c2c