diff --git a/README.md b/README.md
index 10332b598a..5e43ee3a19 100644
--- a/README.md
+++ b/README.md
@@ -224,7 +224,6 @@ bifrost/
 ├── core/                 # Core functionality and shared components
 │   ├── providers/        # Provider-specific implementations
 │   ├── schemas/          # Interfaces and structs used in bifrost
-│   ├── tests/            # Tests to make sure everything is in place
 │   ├── bifrost.go        # Main Bifrost implementation
 │
 ├── docs/                 # Documentations for Bifrost's configurations and contribution guides
diff --git a/transports/bifrost-http/integrations/anthropic/types.go b/transports/bifrost-http/integrations/anthropic/types.go
index c370c5d8ae..93a28f7b62 100644
--- a/transports/bifrost-http/integrations/anthropic/types.go
+++ b/transports/bifrost-http/integrations/anthropic/types.go
@@ -341,15 +341,17 @@ func (r *AnthropicMessageRequest) ConvertToBifrostRequest() *schemas.BifrostRequ
 			bifrostReq.Params = &schemas.ModelParameters{}
 		}
 		toolChoice := &schemas.ToolChoice{
-			Type: func() schemas.ToolChoiceType {
-				if r.ToolChoice.Type == "tool" {
-					return schemas.ToolChoiceTypeFunction
-				}
-				return schemas.ToolChoiceType(r.ToolChoice.Type)
-			}(),
+			ToolChoiceStruct: &schemas.ToolChoiceStruct{
+				Type: func() schemas.ToolChoiceType {
+					if r.ToolChoice.Type == "tool" {
+						return schemas.ToolChoiceTypeFunction
+					}
+					return schemas.ToolChoiceType(r.ToolChoice.Type)
+				}(),
+			},
 		}
 		if r.ToolChoice.Type == "tool" && r.ToolChoice.Name != "" {
-			toolChoice.Function = schemas.ToolChoiceFunction{
+			toolChoice.ToolChoiceStruct.Function = schemas.ToolChoiceFunction{
 				Name: r.ToolChoice.Name,
 			}
 		}
diff --git a/transports/go.mod b/transports/go.mod
index 94d73d966c..d163b248e6 100644
--- a/transports/go.mod
+++ b/transports/go.mod
@@ -4,7 +4,7 @@ go 1.24.1
 
 require (
 	github.com/fasthttp/router v1.5.4
-	github.com/maximhq/bifrost/core v1.1.2
+	github.com/maximhq/bifrost/core v1.1.3
 	github.com/maximhq/bifrost/plugins/maxim v1.0.5
 	github.com/prometheus/client_golang v1.22.0
 	github.com/valyala/fasthttp v1.62.0
diff --git a/transports/go.sum b/transports/go.sum
index 4ad9363092..2d5561be27 100644
--- a/transports/go.sum
+++ b/transports/go.sum
@@ -67,8 +67,8 @@ github.com/klauspost/compress v1.18.0 h1:c/Cqfb0r+Yi+JtIEq73FWXVkRonBlf0CRNYc8Zt
 github.com/klauspost/compress v1.18.0/go.mod h1:2Pp+KzxcywXVXMr50+X0Q/Lsb43OQHYWRCY2AiWywWQ=
 github.com/kylelemons/godebug v1.1.0 h1:RPNrshWIDI6G2gRW9EHilWtl7Z6Sb1BR0xunSBf0SNc=
 github.com/kylelemons/godebug v1.1.0/go.mod h1:9/0rRGxNHcop5bhtWyNeEfOS8JIWk580+fNqagV/RAw=
-github.com/maximhq/bifrost/core v1.1.2 h1:NR5zWD+2dMkj1ySmGqcE7VDJUhkvgrjoMoQikxsdXPU=
-github.com/maximhq/bifrost/core v1.1.2/go.mod h1:8ycaWQ9bjQezoUT/x6a82VmPjoqLzyGglQ0RnnlZjqo=
+github.com/maximhq/bifrost/core v1.1.3 h1:EBxwxqpCNNs3ck44qBwqrTiKGD+1Avyb57fM3/2wTKs=
+github.com/maximhq/bifrost/core v1.1.3/go.mod h1:8ycaWQ9bjQezoUT/x6a82VmPjoqLzyGglQ0RnnlZjqo=
 github.com/maximhq/bifrost/plugins/maxim v1.0.5 h1:K67bqb49X0q07UbNCu1jlmdhmQG+gTdC8sxXN5ok5bY=
 github.com/maximhq/bifrost/plugins/maxim v1.0.5/go.mod h1:Emik7JHo4BIa6kRWDEqOHgFp8M1BQv13bSOepoWw4aw=
 github.com/maximhq/maxim-go v0.1.3 h1:nVzdz3hEjZVxmWHARWIM+Yrn1Jp50qrsK4BA/sz2jj8=