diff --git a/requirements-opt.txt b/requirements-opt.txt
index 2fe5d5958..47c2e654b 100644
--- a/requirements-opt.txt
+++ b/requirements-opt.txt
@@ -5,7 +5,7 @@ oaklib==0.6.23
 # for streaming tests
 fsspec==2025.5.1
 requests==2.32.4
-aiohttp==3.12.14
+aiohttp==3.13.3
 
 # For read_nwb tests
 hdmf-zarr