diff --git a/requirements.txt b/requirements.txt
index de1ca3540..32155c091 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -45,3 +45,4 @@ tqdm==4.66.5
 viv-utils==0.7.11
 vivisect==1.2.1
 wcwidth==0.2.13
+msgspec==0.18.6