diff --git a/docker/docker-compose.middleware.yaml b/docker/docker-compose.middleware.yaml
index afdabd078..bf01791f6 100644
--- a/docker/docker-compose.middleware.yaml
+++ b/docker/docker-compose.middleware.yaml
@@ -1,4 +1,4 @@
-version: '3.1'
+version: '3'
 services:
   # The postgres database.
   db:
diff --git a/docker/docker-compose.yaml b/docker/docker-compose.yaml
index 243fdb0d8..d5e90f834 100644
--- a/docker/docker-compose.yaml
+++ b/docker/docker-compose.yaml
@@ -1,4 +1,4 @@
-version: '3.1'
+version: '3'
 services:
   # API service
   api: