diff --git a/requirements.txt b/requirements.txt
index 9593025..80591a4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,6 @@
 gitdb==4.0.9
 GitPython==3.1.27
 smmap==5.0.0
+zstd==1.5.2.5
 -e .