diff --git a/Dockerfile-debian.template b/Dockerfile-debian.template
index 9345d2ef..52dc34cd 100644
--- a/Dockerfile-debian.template
+++ b/Dockerfile-debian.template
@@ -37,6 +37,7 @@ RUN set -ex; \
         libzip-dev \
         libwebp-dev \
         libgmp-dev \
+        php-oauth \
     ; \
     \
     debMultiarch="$(dpkg-architecture --query DEB_BUILD_MULTIARCH)"; \
@@ -97,6 +98,8 @@ RUN { \
     \
     echo 'apc.enable_cli=1' >> /usr/local/etc/php/conf.d/docker-php-ext-apcu.ini; \
     \
+    echo 'extension=oauth.so' >> /usr/local/etc/php/conf.d/oauth.ini; \
+    \
     echo 'memory_limit=512M' > /usr/local/etc/php/conf.d/memory-limit.ini; \
     \
     mkdir /var/www/data; \