diff --git a/tests/fuzz/oss-fuzz-build b/tests/fuzz/oss-fuzz-build
index 7928b8c2d..2fdc8c59d 100755
--- a/tests/fuzz/oss-fuzz-build
+++ b/tests/fuzz/oss-fuzz-build
@@ -29,6 +29,8 @@
 
 set -euxo pipefail
 
+git submodule update --init --recursive --depth 1
+
 (
     mkdir build
     cd build || exit