diff --git a/pyproject.toml b/pyproject.toml
index b54cad9..f2bc1ca 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -15,7 +15,7 @@ classifiers = [
     "Programming Language :: Python :: 3",
     "License :: OSI Approved :: Apache Software License",
 ]
-dependencies = ["cryptography", "pydantic", "sigstore==3.0.0rc1"]
+dependencies = ["cryptography", "pydantic", "sigstore==3.0.0rc2"]
 requires-python = ">=3.9"
 
 [project.optional-dependencies]