diff --git a/Dockerfile b/Dockerfile
index 1badb89df..7d6b2b35a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -30,6 +30,7 @@ ARG TOOLS="                           \
         git-lfs                       \
         unzip                         \
         xz-utils                      \
+        nmap                          \
         wget"
 
 ARG APT_MIRROR=http://mirrors.ustc.edu.cn