diff --git a/README.md b/README.md
index 1ed1ab7..62f4f4c 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,7 @@ The following MSCs are supported:
 * [MSC1929](https://github.com/matrix-org/matrix-spec-proposals/pull/1929) - the `/.well-known/matrix/support` endpoint
 * [MSC4121](https://github.com/matrix-org/matrix-spec-proposals/pull/4121) - the moderator role
 * [MSC4265](https://github.com/matrix-org/matrix-spec-proposals/pull/4265) - the DPO role
+* [MSC4439](https://github.com/matrix-org/matrix-spec-proposals/pull/4265) - the PGP key field
 
 Initially it was developed to be used in the [Matrix Rooms Search](https://github.com/etkecc/mrs) project, but it can be used in any other project that needs to interact with the admin contact API.
 
diff --git a/contact.go b/contact.go
index c9f31ca..afcfb04 100644
--- a/contact.go
+++ b/contact.go
@@ -29,6 +29,7 @@ type Contact struct {
 	Email    string `json:"email_address,omitempty" yaml:"email_address,omitempty"`
 	MatrixID string `json:"matrix_id,omitempty" yaml:"matrix_id,omitempty"`
 	Role     string `json:"role,omitempty" yaml:"role,omitempty"`
+	PgpKey   string `json:"dev.zirco.msc4439.pgp_key,omitempty" yaml:"dev.zirco.msc4439.pgp_key,omitempty"`
 }
 
 // IsEmpty checks if contact contains at least one contact (either email or mxid)
diff --git a/response_test.go b/response_test.go
index c2627c5..e06783a 100644
--- a/response_test.go
+++ b/response_test.go
@@ -13,6 +13,7 @@ func TestContact_IsEmpty(t *testing.T) {
 		{"nil contact", nil, true},
 		{"empty contact", &Contact{}, true},
 		{"contact with email", &Contact{Email: "test@example.com"}, false},
+		{"contact with email and PGP key", &Contact{Email: "test@example.com", PgpKey:"https://example.com/pgp.key"}, false},
 		{"contact with matrix ID", &Contact{MatrixID: "@user:example.com"}, false},
 		{"contact with both", &Contact{Email: "test@example.com", MatrixID: "@user:example.com"}, false},
 	}