diff --git a/pyproject.toml b/pyproject.toml
index 41d4c4ab..edc55255 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -45,6 +45,7 @@ Issues = "https://github.com/secure-systems-lab/securesystemslib/issues"
 [project.optional-dependencies]
 crypto = ["cryptography>=37.0.0"]
 gcpkms = ["google-cloud-kms", "cryptography>=37.0.0"]
+azurekms = ["azure-identity", "azure-keyvault-keys", "cryptography>=37.0.0"]
 hsm = ["asn1crypto", "cryptography>=37.0.0", "PyKCS11"]
 pynacl = ["pynacl>1.2.0"]
 PySPX = ["PySPX>=0.5.0"]