diff --git a/cmd/claude-code-adapter-cli/claude-code-adapter.go b/cmd/claude-code-adapter-cli/claude-code-adapter.go
index ce64eea..3a34618 100644
--- a/cmd/claude-code-adapter-cli/claude-code-adapter.go
+++ b/cmd/claude-code-adapter-cli/claude-code-adapter.go
@@ -13,7 +13,7 @@ func newClaudeClaudeAdapterCliCommand() *cobra.Command {
 	cmd := &cobra.Command{
 		Use:           "claude-code-adapter-cli [COMMAND] [OPTIONS]",
 		Short:         "Claude Code Adapter Command-Line Interface",
-		Version:       "v0.8.2",
+		Version:       "v0.8.3",
 		SilenceErrors: true,
 		SilenceUsage:  true,
 	}
diff --git a/cmd/claude-code-adapter-cli/serve.go b/cmd/claude-code-adapter-cli/serve.go
index 5279f64..29e95b1 100644
--- a/cmd/claude-code-adapter-cli/serve.go
+++ b/cmd/claude-code-adapter-cli/serve.go
@@ -379,6 +379,12 @@ func onMessages(cmd *cobra.Command, prov provider.Provider, rec snapshot.Recorde
 				sn.ResponseHeader = snapshot.Header(header)
 			}()
 			if enablePassThroughMode {
+				if targetModel, ok := prof.Options.GetModels()[req.Model]; ok {
+					rawBody, err = sjson.SetBytes(rawBody, "model", targetModel)
+					if err != nil {
+						panic(fmt.Errorf("unreachable: %s", err.Error()))
+					}
+				}
 				reader, header, err = prov.MakeAnthropicMessagesRequest(ctx,
 					utils.NewResettableReader(rawBody),
 					provider.WithQuery("beta", "true"),