diff --git a/pyproject.toml b/pyproject.toml
index da9859d..ba2c6c0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -59,7 +59,7 @@ dev = [
     "aioresponses",
     # aioresponses 0.7.x cannot mock aiohttp >= 3.13 (ClientResponse signature
     # change); the runtime 'ocr' extra stays unpinned.
-    "aiohttp<3.13",
+    "aiohttp<3.15",
 ]
 # NO 'pst' extra, NO 'all' extra — the PST binding (libpff-python + native libpff)
 # is a system/native dependency. `pip install pypff` installs an UNRELATED package.