diff --git a/cashu/core/base.py b/cashu/core/base.py
index 26eaf9a..5288b0c 100644
--- a/cashu/core/base.py
+++ b/cashu/core/base.py
@@ -40,9 +40,7 @@ class Proof(BaseModel):
 
 
 class Proofs(BaseModel):
-    """TODO: Use this model"""
-
-    proofs: List[Proof]
+    __root__: List[Proof]
 
 
 class Invoice(BaseModel):
@@ -79,6 +77,11 @@ class BlindedMessages(BaseModel):
     blinded_messages: List[BlindedMessage] = []
 
 
+class PostMintResponseLegacy(BaseModel):
+    # NOTE: Backwards compability for < 0.7.1 where we used a simple list and not a key-value dictionary
+    __root__: List[BlindedSignature] = []
+
+
 class PostMintResponse(BaseModel):
     promises: List[BlindedSignature] = []
 
diff --git a/cashu/wallet/wallet.py b/cashu/wallet/wallet.py
index e797025..4484805 100644
--- a/cashu/wallet/wallet.py
+++ b/cashu/wallet/wallet.py
@@ -24,6 +24,7 @@ from cashu.core.base import (
     MeltRequest,
     P2SHScript,
     PostMintResponse,
+    PostMintResponseLegacy,
     Proof,
     SplitRequest,
     TokenV2,
@@ -260,8 +261,12 @@ class LedgerAPI:
         resp.raise_for_status()
         reponse_dict = resp.json()
         self.raise_on_error(reponse_dict)
-        promises = PostMintResponse.parse_obj(reponse_dict)
-        return self._construct_proofs(promises.promises, secrets, rs)
+        try:
+            promises = PostMintResponseLegacy.parse_obj(reponse_dict)
+            return self._construct_proofs(promises, secrets, rs)
+        except:
+            promises = PostMintResponse.parse_obj(reponse_dict)
+            return self._construct_proofs(promises.promises, secrets, rs)
 
     async def split(self, proofs, amount, scnd_secret: Optional[str] = None):
         """Consume proofs and create new promises based on amount split.