diff --git a/webservice/Dockerfile b/webservice/Dockerfile
index eec332f..2fd0ac4 100644
--- a/webservice/Dockerfile
+++ b/webservice/Dockerfile
@@ -58,6 +58,8 @@ RUN \
         bz2 \
         intl \
         bcmath \
+        sysvsem \
+        pcntl \
         opcache && \
     CFLAGS="-I/usr/src/php" docker-php-ext-install xmlreader