diff --git a/newsfragments/482.internal.rst b/newsfragments/482.internal.rst
new file mode 100644
index 00000000..45afc5ee
--- /dev/null
+++ b/newsfragments/482.internal.rst
@@ -0,0 +1 @@
+Update ``trio`` package version dependency
diff --git a/setup.py b/setup.py
index 718d1ada..74e17e15 100644
--- a/setup.py
+++ b/setup.py
@@ -66,7 +66,7 @@ install_requires = [
     "pynacl>=1.3.0",
     "rpcudp>=3.0.0",
     "trio-typing>=0.0.4",
-    "trio>=0.15.0",
+    "trio>=0.26.0",
 ]