diff --git a/DOCUMENTATION/content/documentation/index.md b/DOCUMENTATION/content/documentation/index.md
index d83b442..b98fe30 100644
--- a/DOCUMENTATION/content/documentation/index.md
+++ b/DOCUMENTATION/content/documentation/index.md
@@ -1973,6 +1973,26 @@ YAML PHP extension allows you to easily parse and create YAML structured data. I
 4 - Re-build the container `docker-compose build php-fpm`<br>
 
 
+
+
+<br>
+<a name="Install-AST"></a>
+## Install AST PHP extension
+AST exposes the abstract syntax tree generated by PHP 7+. This extension is required by tools such as `Phan`, a static analyzer for PHP.
+
+1 - Open the `.env` file
+
+2 - Search for the `WORKSPACE_INSTALL_AST` argument under the Workspace Container
+
+3 - Set it to `true`
+
+4 - Re-build the container `docker-compose build workspace`
+
+**Note** If you need a specific version of AST then search for the `WORKSPACE_AST_VERSION` argument under the Workspace Container and set it to the desired version and continue step 4.
+
+
+
+
 <br>
 <a name="phpstorm-debugging"></a>
 ## PHPStorm Debugging Guide
diff --git a/docker-compose.yml b/docker-compose.yml
index 07c47f6..9ed17d1 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -109,12 +109,14 @@ services:
           - INSTALL_MYSQL_CLIENT=${WORKSPACE_INSTALL_MYSQL_CLIENT}
           - INSTALL_PING=${WORKSPACE_INSTALL_PING}
           - INSTALL_SSHPASS=${WORKSPACE_INSTALL_SSHPASS}
+          - INSTALL_AST=${WORKSPACE_INSTALL_AST}
           - PUID=${WORKSPACE_PUID}
           - PGID=${WORKSPACE_PGID}
           - CHROME_DRIVER_VERSION=${WORKSPACE_CHROME_DRIVER_VERSION}
           - NODE_VERSION=${WORKSPACE_NODE_VERSION}
           - YARN_VERSION=${WORKSPACE_YARN_VERSION}
           - DRUSH_VERSION=${WORKSPACE_DRUSH_VERSION}
+          - AST_VERSION=${WORKSPACE_AST_VERSION}
           - TZ=${WORKSPACE_TIMEZONE}
           - BLACKFIRE_CLIENT_ID=${BLACKFIRE_CLIENT_ID}
           - BLACKFIRE_CLIENT_TOKEN=${BLACKFIRE_CLIENT_TOKEN}
diff --git a/env-example b/env-example
index 0fd9d9d..09304a2 100644
--- a/env-example
+++ b/env-example
@@ -145,6 +145,8 @@ WORKSPACE_TIMEZONE=UTC
 WORKSPACE_SSH_PORT=2222
 WORKSPACE_INSTALL_FFMPEG=false
 WORKSPACE_INSTALL_GNU_PARALLEL=false
+WORKSPACE_INSTALL_AST=true
+WORKSPACE_AST_VERSION=1.0.3
 
 ### PHP_FPM ###############################################
 
diff --git a/workspace/Dockerfile b/workspace/Dockerfile
index 0fd26b6..baf8f22 100644
--- a/workspace/Dockerfile
+++ b/workspace/Dockerfile
@@ -508,6 +508,21 @@ RUN if [ ${INSTALL_INOTIFY} = true ]; then \
     ln -s /etc/php/${LARADOCK_PHP_VERSION}/mods-available/inotify.ini /etc/php/${LARADOCK_PHP_VERSION}/cli/conf.d/20-inotify.ini \
 ;fi
 
+###########################################################################
+# AST EXTENSION
+###########################################################################
+
+ARG INSTALL_AST=false
+ARG AST_VERSION=1.0.3
+ENV AST_VERSION ${AST_VERSION}
+
+RUN if [ ${INSTALL_AST} = true ]; then \
+    # Install AST extension
+    printf "\n" | pecl -q install ast-${AST_VERSION} && \
+    echo "extension=ast.so" >> /etc/php/${LARADOCK_PHP_VERSION}/mods-available/ast.ini && \
+    phpenmod -v ${LARADOCK_PHP_VERSION} -s cli ast \
+;fi
+
 ###########################################################################
 # fswatch
 ###########################################################################