diff --git a/src/Dockerfile b/src/Dockerfile
index 880de98..fd5d5fe 100644
--- a/src/Dockerfile
+++ b/src/Dockerfile
@@ -6,7 +6,7 @@ RUN apt-get update
 
 RUN apt-get install python3 python3-pip -y
 
-RUN pip3 install flask flask-wtf flask-mail markdown pygments
+RUN pip3 install flask flask-wtf flask-mail markdown pygments email-validator
 
 WORKDIR /flask