diff --git a/Dockerfile b/Dockerfile
index 4ef7154..bd2a742 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -16,7 +16,7 @@ RUN apt-get update && \
 apt-get install -y build-essential jq strace ltrace curl wget rubygems gcc dnsutils netcat gcc-multilib net-tools \
   vim gdb gdb-multiarch python python3 python3-pip python3-dev libssl-dev libffi-dev wget git make procps \
   libpcre3-dev libdb-dev libxt-dev libxaw7-dev emacs-nox && \
-pip install capstone requests pwntools r2pipe pwntools keystone-engine unicorn capstone ropper meson ninja && \
+pip install capstone requests pwntools r2pipe keystone-engine unicorn ropper meson ninja && \
 mkdir /tools && \
 cd /tools && git clone https://github.com/JonathanSalwan/ROPgadget && \
 cd /tools && git clone https://github.com/niklasb/libc-database && \