diff --git a/.gitmodules b/.gitmodules
index 7dc790c..e7948d3 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,6 @@
 [submodule "tests/googletest"]
 	path = tests/googletest
 	url = https://github.com/google/googletest
+[submodule "external/src/RandomX"]
+	path = external/src/RandomX
+	url = https://github.com/SChernykh/RandomX
diff --git a/external/src/RandomX b/external/src/RandomX
new file mode 160000
index 0000000..0ff83a2
--- /dev/null
+++ b/external/src/RandomX
@@ -0,0 +1 @@
+Subproject commit 0ff83a2a81a82b94f657826564de54792988aac2