diff --git a/pyproject.toml b/pyproject.toml
index 6fb7cbe..3a031d6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -40,7 +40,7 @@ classifiers = [
   "Topic :: Software Development :: Code Generators",
   "Topic :: Software Development :: Libraries :: Python Modules",
 ]
-dependencies = ["protobuf >=3.19.0, < 6.0.0dev"]
+dependencies = ["protobuf >=3.19.0, < 7.0.0"]
 dynamic = ["version"]
 
 [project.urls]