diff --git a/recipes/nmap/linux_x86/Dockerfile b/recipes/nmap/linux_x86/Dockerfile
index 4a1d5cc..2a6cf44 100644
--- a/recipes/nmap/linux_x86/Dockerfile
+++ b/recipes/nmap/linux_x86/Dockerfile
@@ -12,7 +12,9 @@ RUN apt-get update && \
         wget \
         git \
         pkg-config \
-        python
+        python \
+        flex \
+        bison
 RUN mkdir /build
 ADD . /build
 RUN chmod +x /build/build_x86.sh