diff --git a/requirements-dev.txt b/requirements-dev.txt
index 03d3df2..37b0fe1 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -15,7 +15,7 @@ darglint>=1.8.1
 defusedxml>=0.7.1
 
 # CLI and HTTP (used by admin.py)
-httpx>=0.24.0
+httpx>=0.28.1
 typer>=0.9.0
 
 # Visualization