diff --git a/.platform.app.yaml b/.platform.app.yaml
index 95ea3b8..a04e6a3 100644
--- a/.platform.app.yaml
+++ b/.platform.app.yaml
@@ -6,7 +6,12 @@ type: 'php:7.4'
 
 runtime:
   sizing_hints:
-    request_memory: 20
+    # A lean stack means that application memory usage is low.
+    # This allows us to have many workers which is useful as most time is spent
+    # waiting for token authorization.
+    # 10MB is the Platform.sh minimum but setting this value results in
+    # redirection errors so use a value 1 larger.
+    request_memory: 11
 
 # The build-time dependencies of the app.
 dependencies: