diff --git a/account/server.go b/account/server.go
index 915fc2c..8131dfc 100644
--- a/account/server.go
+++ b/account/server.go
@@ -40,6 +40,7 @@ const (
 var (
 	DefaultNewCurrencyPurchaseAmount = ocp_common.ToCoreMintQuarks(5)
 	DefaultNewCurrencyFeeAmount      = ocp_common.ToCoreMintQuarks(15)
+	DefaulUsdcWithdrawalFeeAmount    = ocp_common.ToCoreMintQuarks(5) / 10
 )
 
 type onRampProviderConfig struct {
@@ -259,6 +260,7 @@ func (s *Server) GetUserFlags(ctx context.Context, req *accountpb.GetUserFlagsRe
 			BillExchangeDataTimeout:    durationpb.New(defaultBillExchangeDataTimeout),
 			NewCurrencyPurchaseAmount:  DefaultNewCurrencyPurchaseAmount,
 			NewCurrencyFeeAmount:       DefaultNewCurrencyFeeAmount,
+			UsdcWithdrawalFeeAmount:    DefaulUsdcWithdrawalFeeAmount,
 		},
 	}, nil
 }
@@ -290,6 +292,7 @@ func (s *Server) GetUnauthenticatedUserFlags(ctx context.Context, req *accountpb
 			MinBuildNumber:             uint32(minBuildNumber),
 			NewCurrencyPurchaseAmount:  DefaultNewCurrencyPurchaseAmount,
 			NewCurrencyFeeAmount:       DefaultNewCurrencyFeeAmount,
+			UsdcWithdrawalFeeAmount:    DefaulUsdcWithdrawalFeeAmount,
 		},
 	}, nil
 }
diff --git a/go.mod b/go.mod
index bd28f61..d4cead3 100644
--- a/go.mod
+++ b/go.mod
@@ -5,7 +5,7 @@ go 1.26.0
 require (
 	firebase.google.com/go/v4 v4.18.0
 	github.com/ReneKroon/ttlcache v1.7.0
-	github.com/code-payments/flipcash2-protobuf-api v1.3.1-0.20260420185108-1e0abce29a0a
+	github.com/code-payments/flipcash2-protobuf-api v1.4.0
 	github.com/code-payments/ocp-protobuf-api v1.10.0
 	github.com/code-payments/ocp-server v1.11.0
 	github.com/devsisters/go-applereceipt v0.0.0-20240805020915-fa22a0160fc2
diff --git a/go.sum b/go.sum
index bc8f7f1..7bbe496 100644
--- a/go.sum
+++ b/go.sum
@@ -40,8 +40,8 @@ github.com/cockroachdb/cockroach-go/v2 v2.2.0 h1:/5znzg5n373N/3ESjHF5SMLxiW4RKB0
 github.com/cockroachdb/cockroach-go/v2 v2.2.0/go.mod h1:u3MiKYGupPPjkn3ozknpMUpxPaNLTFWAya419/zv6eI=
 github.com/code-payments/code-vm-indexer v1.2.0 h1:rSHpBMiT9BKgmKcXg/VIoi/h0t7jNxGx07Qz59m+6Q0=
 github.com/code-payments/code-vm-indexer v1.2.0/go.mod h1:vn91YN2qNqb+gGJeZe2+l+TNxVmEEiRHXXnIn2Y40h8=
-github.com/code-payments/flipcash2-protobuf-api v1.3.1-0.20260420185108-1e0abce29a0a h1:pS06GcrKd8RAI/eBEu40WMz8HJ/NgUPXFisgNQiSHMc=
-github.com/code-payments/flipcash2-protobuf-api v1.3.1-0.20260420185108-1e0abce29a0a/go.mod h1:s/1pOsb4FTRD+LcvRKGjfmm6ygRS/m1ep34EIW0fuDs=
+github.com/code-payments/flipcash2-protobuf-api v1.4.0 h1:/4LnhPHlEfmPtakKaqHT7fSs76chURXmoGtwv3pswmM=
+github.com/code-payments/flipcash2-protobuf-api v1.4.0/go.mod h1:s/1pOsb4FTRD+LcvRKGjfmm6ygRS/m1ep34EIW0fuDs=
 github.com/code-payments/ocp-protobuf-api v1.10.0 h1:8GEDLh3NShOYz6J7a9VOCqu+xJSd7xR42pewaPfkiE4=
 github.com/code-payments/ocp-protobuf-api v1.10.0/go.mod h1:tw6BooY5a8l6CtSZnKOruyKII0W04n89pcM4BizrgG8=
 github.com/code-payments/ocp-server v1.11.0 h1:t3RVFv3T0W7+R/AxHBbWFhVWicA3zT4S0YE0J4C4JgE=