diff --git a/comanage-registry-base/Dockerfile b/comanage-registry-base/Dockerfile
index c8c61fb..ff7755f 100644
--- a/comanage-registry-base/Dockerfile
+++ b/comanage-registry-base/Dockerfile
@@ -38,7 +38,7 @@ RUN apt-get update && apt-get install -y \
       && docker-php-ext-configure pgsql -with-pgsql=/usr/local/pgsql \
       && docker-php-ext-configure ldap --with-libdir=lib/x86_64-linux-gnu \
       && docker-php-ext-configure mysqli \
-      && docker-php-ext-install xsl pdo pdo_mysql pdo_pgsql mysqli pgsql ldap \
+      && docker-php-ext-install xsl pdo pdo_mysql pdo_pgsql mysqli pgsql ldap intl \
       && docker-php-source delete \
       && apt-get purge -y \
          libldap2-dev \