diff --git a/requirements.txt b/requirements.txt
index e8d40bb..0be8239 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,7 @@
 # Runtime dependencies for Evincta
 anthropic==0.112.0
 fastapi==0.115.12
+slowapi==0.1.10
 uvicorn==0.34.0
 langfuse==4.12.0
 langgraph==1.2.6