diff --git a/requirements.txt b/requirements.txt
index 96ec8f79ccd2c06a830005d59baaf84d601f67f1..d11bcbe8cfbda5719cfee236238e2060d616d81b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,5 @@
 docopt
 numba
+awkward1
 uproot>=3.11.1
 setuptools_scm