diff --git a/Dockerfile b/Dockerfile
index eee4529c2a974..99da796860a77 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -32,6 +32,8 @@ WORKDIR /go/src/github.com/pingcap/tidb
 # Cache dependencies
 COPY go.mod .
 COPY go.sum .
+COPY parser/go.mod parser/go.mod
+COPY parser/go.sum parser/go.sum
 
 RUN GO111MODULE=on go mod download