diff --git a/pyproject.toml b/pyproject.toml
index 00d81d1..9ebb738 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -10,7 +10,7 @@ description = "Gemini protocol implementation for asyncio"
 urls = {Homepage = "https://github.com/keis/aiogemini"}
 dependencies = [
     "yarl ~= 1.6",
-    "cryptography >= 3.2,< 42.0",
+    "cryptography >= 3.2,< 43.0",
 ]
 
 [project.readme]