diff --git a/.ci/assets/ci_constraints.txt b/.ci/assets/ci_constraints.txt
index c9198f19a70..9ac452ec740 100644
--- a/.ci/assets/ci_constraints.txt
+++ b/.ci/assets/ci_constraints.txt
@@ -13,7 +13,3 @@ multidict!=6.3.0
 
 azure-storage-blob!=12.28.*
 # Apparently does not work with current azurite.
-
-
-pycares<5
-# older aiodns versions don't pin pycares UB, and are broken by pycares>=5
diff --git a/pyproject.toml b/pyproject.toml
index f746a583de9..af08f09e827 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -25,7 +25,7 @@ classifiers=[
 ]
 requires-python = ">=3.11"
 dependencies = [
-  "aiodns>=3.3.0,<3.7",  # Looks like only bugfixes in z-Stream.
+  "aiodns>=3.6.1,<4.1",  # Looks like only bugfixes in z-Stream.
   "aiofiles>=22.1,<=25.1.0",  # Uses sort of CalVer, luckily not released often https://github.com/Tinche/aiofiles/issues/144 .
   "aiohttp>=3.10.10,<3.14",  # SemVer https://docs.aiohttp.org/en/stable/faq.html#what-is-the-api-stability-and-deprecation-policy .
   "asyncio-throttle>=1.0,<=1.0.2",  # Unsure about versioning, but not released often anyway.