diff --git a/.env b/.env
index 9affb93f53..7cbb06145a 100644
--- a/.env
+++ b/.env
@@ -17,9 +17,22 @@ LOCAL_DIR=src
 # The PHP version to use. Valid options are 'latest', and '{version}-fpm'.
 LOCAL_PHP=latest
 
-# Whether or not to enable XDebug.
+# Whether or not to enable Xdebug.
 LOCAL_PHP_XDEBUG=false
 
+##
+# The Xdebug features to enable.
+#
+# By default, the following features are enabled in the local environment:
+# - Development helpers (`develop`).
+# - Step debugging (`debug`).
+#
+# To generate a code coverage report, `coverage` mode must be active.
+#
+# For a full list of accepted values, see https://xdebug.org/docs/all_settings#mode.
+##
+LOCAL_PHP_XDEBUG_MODE=develop,debug
+
 # Whether or not to enable Memcached.
 LOCAL_PHP_MEMCACHED=false
 
diff --git a/.github/workflows/test-coverage.yml b/.github/workflows/test-coverage.yml
index f1b08567cd..a6dc207563 100644
--- a/.github/workflows/test-coverage.yml
+++ b/.github/workflows/test-coverage.yml
@@ -19,6 +19,7 @@ env:
   PUPPETEER_SKIP_CHROMIUM_DOWNLOAD: ${{ true }}
   LOCAL_PHP: '7.4-fpm'
   LOCAL_PHP_XDEBUG: true
+  LOCAL_PHP_XDEBUG_MODE: 'coverage'
   LOCAL_PHP_MEMCACHED: ${{ false }}
 
 jobs:
diff --git a/docker-compose.yml b/docker-compose.yml
index 060fd130e9..efcd0cd5c7 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -38,6 +38,7 @@ services:
 
     environment:
       - LOCAL_PHP_XDEBUG=${LOCAL_PHP_XDEBUG-false}
+      - XDEBUG_MODE=${LOCAL_PHP_XDEBUG_MODE-develop,debug}
       - LOCAL_PHP_MEMCACHED=${LOCAL_PHP_MEMCACHED-false}
       - PHP_FPM_UID=${PHP_FPM_UID-1000}
       - PHP_FPM_GID=${PHP_FPM_GID-1000}