diff --git a/docker-compose.yml b/docker-compose.yml
index 0fa1a0d..7896376 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -287,6 +287,7 @@ services:
           - INSTALL_BCMATH=${PHP_FPM_INSTALL_BCMATH}
           - INSTALL_MEMCACHED=${PHP_FPM_INSTALL_MEMCACHED}
           - INSTALL_SOCKETS=${LARAVEL_HORIZON_INSTALL_SOCKETS}
+          - INSTALL_YAML=${LARAVEL_HORIZON_INSTALL_YAML}
           - INSTALL_CASSANDRA=${PHP_FPM_INSTALL_CASSANDRA}
           - INSTALL_PHPREDIS=${LARAVEL_HORIZON_INSTALL_PHPREDIS}
           - INSTALL_MONGO=${LARAVEL_HORIZON_INSTALL_MONGO}
diff --git a/env-example b/env-example
index 903cfe5..fd14dc2 100644
--- a/env-example
+++ b/env-example
@@ -251,6 +251,7 @@ NGINX_SSL_PATH=./nginx/ssl/
 ### LARAVEL_HORIZON ################################################
 
 LARAVEL_HORIZON_INSTALL_SOCKETS=false
+LARAVEL_HORIZON_INSTALL_YAML=false
 LARAVEL_HORIZON_INSTALL_PHPREDIS=true
 LARAVEL_HORIZON_INSTALL_MONGO=false
 LARAVEL_HORIZON_INSTALL_FFMPEG=false
diff --git a/laravel-horizon/Dockerfile b/laravel-horizon/Dockerfile
index 05a8ef2..49d0495 100644
--- a/laravel-horizon/Dockerfile
+++ b/laravel-horizon/Dockerfile
@@ -105,6 +105,24 @@ RUN if [ ${INSTALL_MONGO} = true ]; then \
   && docker-php-ext-enable mongodb \
   ;fi
 
+###########################################################################
+# YAML: extension
+###########################################################################
+
+ARG INSTALL_YAML=false
+
+RUN if [ ${INSTALL_YAML} = true ]; then \
+     apk --update add -U --no-cache --virtual temp yaml-dev \
+     && apk add --no-cache yaml \
+     && docker-php-source extract \
+     && pecl channel-update pecl.php.net \
+     && pecl install yaml \
+     && docker-php-ext-enable yaml \
+     && pecl clear-cache \
+     && docker-php-source delete \
+     && apk del temp \
+;fi
+
 
 ###########################################################################
 # PHP Memcached: