diff --git a/pyproject.toml b/pyproject.toml
index 6dd9cc9..5de86a9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -36,8 +36,8 @@ dependencies = [
 [project.optional-dependencies]
 s3 = ["boto3==1.34.6"]
 aws = ["boto3==1.34.6"]  # Alias for s3 for backward compatibility
-vault = ["hvac==1.2.1"]
-all = ["boto3==1.34.6", "hvac==1.2.1"]
+vault = ["hvac==2.3.0"]
+all = ["boto3==1.34.6", "hvac==2.3.0"]
 dev = [
     "pytest==8.4.2",
     "pytest-cov==7.0.0",
@@ -49,7 +49,7 @@ dev = [
     "mypy==1.18.2",
     "types-PyYAML==6.0.12.20250915",
     "boto3==1.34.6",
-    "hvac==1.2.1",
+    "hvac==2.3.0",
     "bump-my-version==1.2.4",
     "build==1.3.0",
     "twine==6.2.0",