diff --git a/docker/php/Dockerfile b/docker/php/Dockerfile
index a4a1a587..7dd40acc 100644
--- a/docker/php/Dockerfile
+++ b/docker/php/Dockerfile
@@ -47,10 +47,12 @@ RUN apk add --no-cache \
     && pecl install -o -f igbinary \
     && pecl install redis \
     && pecl install imagick \
+    && pecl install excimer \
     && docker-php-ext-enable \
         igbinary \
         redis \
         imagick \
+        excimer \
     && apk del \
         zlib-dev \
         libpng-dev \