diff --git a/.github/workflows/debug.yml b/.github/workflows/debug.yml
index e5135443..812c40e6 100644
--- a/.github/workflows/debug.yml
+++ b/.github/workflows/debug.yml
@@ -62,7 +62,27 @@ jobs:
             ~/go/pkg/mod
           key: go118-${{ hashFiles('**/go.sum') }}
       - name: Run Test
-        run: make
+        run: make ci_build_go118
+  build_go120:
+    name: Debug build (Go 1.20)
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - name: Setup Go
+        uses: actions/setup-go@v4
+        with:
+          go-version: 1.20.7
+      - name: Cache go module
+        uses: actions/cache@v3
+        with:
+          path: |
+            ~/go/pkg/mod
+          key: go118-${{ hashFiles('**/go.sum') }}
+      - name: Run Test
+        run: make ci_build
   cross:
     strategy:
       matrix:
diff --git a/Makefile b/Makefile
index d69247e0..50c04e2e 100644
--- a/Makefile
+++ b/Makefile
@@ -1,20 +1,30 @@
 NAME = sing-box
 COMMIT = $(shell git rev-parse --short HEAD)
-TAGS ?= with_gvisor,with_quic,with_dhcp,with_wireguard,with_utls,with_reality_server,with_clash_api
+TAGS_GO118 = with_gvisor,with_dhcp,with_wireguard,with_utls,with_reality_server,with_clash_api
+TAGS_GO120 ?= with_quic
 TAGS_TEST ?= with_gvisor,with_quic,with_wireguard,with_grpc,with_ech,with_utls,with_reality_server,with_shadowsocksr
 
 GOHOSTOS = $(shell go env GOHOSTOS)
 GOHOSTARCH = $(shell go env GOHOSTARCH)
 VERSION=$(shell CGO_ENABLED=0 GOOS=$(GOHOSTOS) GOARCH=$(GOHOSTARCH) go run ./cmd/internal/read_tag)
 
-PARAMS = -v -trimpath -tags "$(TAGS)" -ldflags "-X 'github.com/sagernet/sing-box/constant.Version=$(VERSION)' -s -w -buildid="
+PARAMS = -v -trimpath -ldflags "-X 'github.com/sagernet/sing-box/constant.Version=$(VERSION)' -s -w -buildid="
+MAIN_PARAMS = $(PARAMS) -tags "$(TAGS_GO118),$(TAGS_GO120)"
 MAIN = ./cmd/sing-box
 PREFIX ?= $(shell go env GOPATH)
 
 .PHONY: test release
 
 build:
+	go build $(MAIN_PARAMS) $(MAIN)
+
+ci_build_go118:
 	go build $(PARAMS) $(MAIN)
+	go build $(PARAMS) -tags "$(TAGS_GO118)" $(MAIN)
+
+ci_build:
+	go build $(PARAMS) $(MAIN)
+	go build $(MAIN_PARAMS) $(MAIN)
 
 install:
 	go build -o $(PREFIX)/bin/$(NAME) $(PARAMS) $(MAIN)
diff --git a/common/badtls/badtls_stub.go b/common/badtls/badtls_stub.go
index 7810bb1c..2f0028f6 100644
--- a/common/badtls/badtls_stub.go
+++ b/common/badtls/badtls_stub.go
@@ -5,8 +5,10 @@ package badtls
 import (
 	"crypto/tls"
 	"os"
+
+	aTLS "github.com/sagernet/sing/common/tls"
 )
 
-func Create(conn *tls.Conn) (TLSConn, error) {
+func Create(conn *tls.Conn) (aTLS.Conn, error) {
 	return nil, os.ErrInvalid
 }