diff --git a/distillery/resources/compose/barrel/Dockerfile b/distillery/resources/compose/barrel/Dockerfile
index 4b4a125..bd185c8 100644
--- a/distillery/resources/compose/barrel/Dockerfile
+++ b/distillery/resources/compose/barrel/Dockerfile
@@ -42,7 +42,9 @@ RUN apt-get update && apt-get install -y \
         xmlrpc \
     && \
     pecl install ssh2-1.2 && \
+    pecl install apcu && \
     docker-php-ext-enable \
+        apcu \
         curl \
         gd \
         intl \