diff --git a/.env.slic b/.env.slic
index 1dd73bf..d6422ef 100644
--- a/.env.slic
+++ b/.env.slic
@@ -93,3 +93,8 @@ SLIC_WP_AUTO_UPDATE_CORE=false
 # This value will be assigned to the AUTOMATIC_UPDATER_DISABLED constant defined in the wp-config.php file.
 # Set to `false` to allow all types of automatic updates.
 SLIC_AUTOMATIC_UPDATER_DISABLED=true
+
+# This value will be used as the compose project name, which adds a prefix to the container names.
+# It's useful to avoid conflicts when running multiple instances of slic in parallel.
+# More details: https://docs.docker.com/compose/how-tos/project-name/
+SLIC_COMPOSE_PROJECT_NAME=slic
diff --git a/slic-stack.yml b/slic-stack.yml
index fb06bc1..5c8fdda 100644
--- a/slic-stack.yml
+++ b/slic-stack.yml
@@ -1,5 +1,8 @@
 # docker compose configuration file used to run cross-activation tests.
 
+# Add a prefix to containers to avoid conflicts when running in parallel. Default 'slic'.
+name: ${SLIC_COMPOSE_PROJECT_NAME:-slic}
+
 networks:
   slic: