diff --git a/src/borg/crypto/key.py b/src/borg/crypto/key.py
index 23cec5aa278..ce547f32dcc 100644
--- a/src/borg/crypto/key.py
+++ b/src/borg/crypto/key.py
@@ -791,7 +791,7 @@ def init_ciphers(self, manifest_data=None, iv=0):
         self.cipher = self._get_cipher(self.sessionid, iv=0)
 
 
-class AESOCBKeyfileKey(AEADKeyBase, FlexiKey):
+class AESOCBKeyfileKey(ID_HMAC_SHA_256, AEADKeyBase, FlexiKey):
     TYPES_ACCEPTABLE = {KeyType.AESOCBKEYFILE, KeyType.AESOCBREPO}
     TYPE = KeyType.AESOCBKEYFILE
     NAME = 'key file AES-OCB'
@@ -800,7 +800,7 @@ class AESOCBKeyfileKey(AEADKeyBase, FlexiKey):
     CIPHERSUITE = AES256_OCB
 
 
-class AESOCBRepoKey(AEADKeyBase, FlexiKey):
+class AESOCBRepoKey(ID_HMAC_SHA_256, AEADKeyBase, FlexiKey):
     TYPES_ACCEPTABLE = {KeyType.AESOCBKEYFILE, KeyType.AESOCBREPO}
     TYPE = KeyType.AESOCBREPO
     NAME = 'repokey AES-OCB'
@@ -809,7 +809,7 @@ class AESOCBRepoKey(AEADKeyBase, FlexiKey):
     CIPHERSUITE = AES256_OCB
 
 
-class CHPOKeyfileKey(AEADKeyBase, FlexiKey):
+class CHPOKeyfileKey(ID_HMAC_SHA_256, AEADKeyBase, FlexiKey):
     TYPES_ACCEPTABLE = {KeyType.CHPOKEYFILE, KeyType.CHPOREPO}
     TYPE = KeyType.CHPOKEYFILE
     NAME = 'key file ChaCha20-Poly1305'
@@ -818,7 +818,7 @@ class CHPOKeyfileKey(AEADKeyBase, FlexiKey):
     CIPHERSUITE = CHACHA20_POLY1305
 
 
-class CHPORepoKey(AEADKeyBase, FlexiKey):
+class CHPORepoKey(ID_HMAC_SHA_256, AEADKeyBase, FlexiKey):
     TYPES_ACCEPTABLE = {KeyType.CHPOKEYFILE, KeyType.CHPOREPO}
     TYPE = KeyType.CHPOREPO
     NAME = 'repokey ChaCha20-Poly1305'