diff --git a/selfprivacy_api/graphql/mutations/users_mutations.py b/selfprivacy_api/graphql/mutations/users_mutations.py
index f7317fb..57825bc 100644
--- a/selfprivacy_api/graphql/mutations/users_mutations.py
+++ b/selfprivacy_api/graphql/mutations/users_mutations.py
@@ -147,7 +147,7 @@ class UsersMutations:
         except InvalidPublicKey:
             return UserMutationReturn(
                 success=False,
-                message="Invalid key type. Only ssh-ed25519 and ssh-rsa are supported",
+                message="Invalid key type. Only ssh-ed25519, ssh-rsa and ecdsa are supported",
                 code=400,
             )
         except UserNotFound:
diff --git a/selfprivacy_api/utils/__init__.py b/selfprivacy_api/utils/__init__.py
index 96bf9d8..40ed5b6 100644
--- a/selfprivacy_api/utils/__init__.py
+++ b/selfprivacy_api/utils/__init__.py
@@ -88,10 +88,12 @@ class ReadUserData(object):
 
 
 def validate_ssh_public_key(key):
-    """Validate SSH public key. It may be ssh-ed25519 or ssh-rsa."""
+    """Validate SSH public key.
+    It may be ssh-ed25519, ssh-rsa or ecdsa-sha2-nistp256."""
     if not key.startswith("ssh-ed25519"):
         if not key.startswith("ssh-rsa"):
-            return False
+            if not key.startswith("ecdsa-sha2-nistp256"):
+                return False
     return True