diff --git a/.gitmodules b/.gitmodules
index 19b528e5..4fd590e4 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -18,6 +18,11 @@
     url = https://github.com/upx/upx-vendor-ucl.git
     branch = upx-vendor
     shallow = true
+[submodule "vendor/valgrind"]
+    path = vendor/valgrind
+    url = https://github.com/upx/upx-vendor-valgrind.git
+    branch = upx-vendor
+    shallow = true
 [submodule "vendor/zlib"]
     path = vendor/zlib
     url = https://github.com/upx/upx-vendor-zlib.git
diff --git a/vendor/valgrind b/vendor/valgrind
new file mode 160000
index 00000000..a584b7ed
--- /dev/null
+++ b/vendor/valgrind
@@ -0,0 +1 @@
+Subproject commit a584b7ed2384b238c5e274309e36195b64e54516