diff --git a/info.proto b/info.proto
index dd00b26..bc5178a 100644
--- a/info.proto
+++ b/info.proto
@@ -18,8 +18,8 @@ enum ContactType {
 message MethodTypes {
   MethodType method = 1;
   UnitType unit = 2;
-  uint64 min_amount = 3;
-  uint64 max_amount = 4;
+  uint32 min_amount = 3;
+  uint32 max_amount = 4;
 }
 message NutDetails {
   repeated MethodTypes methods = 1;
diff --git a/melt.proto b/melt.proto
index a33bff7..9481178 100644
--- a/melt.proto
+++ b/melt.proto
@@ -21,8 +21,8 @@ message PostMeltQuoteStateResponse {
 
 message PostMeltQuoteBolt11Response {
   string quote = 1;
-  uint64 amount = 2;
-  uint64 fee_reserve = 3;
+  uint32 amount = 2;
+  uint32 fee_reserve = 3;
   bool paid = 4;
   int64 expiry = 5;
 }
diff --git a/message.proto b/message.proto
index f992d1d..21062c2 100644
--- a/message.proto
+++ b/message.proto
@@ -3,7 +3,7 @@ package cashu.v1;
 option go_package = "github.com/cashu/rpc/message";
 
 message BlindedMessage {
-  uint64 amount = 1;
+  uint32 amount = 1;
   string id = 2;
   string B_ = 3;
 }
\ No newline at end of file
diff --git a/mint.proto b/mint.proto
index 1632e8f..aedf403 100644
--- a/mint.proto
+++ b/mint.proto
@@ -14,7 +14,7 @@ enum UnitType {
 
 
 message PostMintQuoteBolt11Request {
-  uint64 amount = 1;
+  uint32 amount = 1;
   string unit = 2;
 }
 
diff --git a/proofs.proto b/proofs.proto
index edb19ed..413689e 100644
--- a/proofs.proto
+++ b/proofs.proto
@@ -3,7 +3,7 @@ syntax = "proto3";
 package cashu.v1;
 option go_package = "github.com/cashu/rpc/proofs";
 message Proof {
-  uint64 amount = 1;
+  uint32 amount = 1;
   string id = 2;
   string secret = 3;
   string C = 4;