diff --git a/compose/app.yml b/compose/app.yml
index ef9ae480..17bab89b 100644
--- a/compose/app.yml
+++ b/compose/app.yml
@@ -30,6 +30,7 @@ services:
     environment:
       # For this to take effect, remove init/timeout, and in Gemfile, fix "rack-timeout" to not require anything.
       RACK_TIMEOUT_SERVICE_TIMEOUT: 25
+      db_pool_size: 60
     logging:
       driver: "json-file"
       options:
diff --git a/compose/mqtt-task.yml b/compose/mqtt-task.yml
index f2258b12..e7f94c43 100644
--- a/compose/mqtt-task.yml
+++ b/compose/mqtt-task.yml
@@ -10,3 +10,5 @@ services:
       driver: "json-file"
       options:
         max-size: "100m"
+    environment:
+      db_pool_size: 5
diff --git a/compose/sidekiq.yml b/compose/sidekiq.yml
index 04eec931..347cbd2d 100644
--- a/compose/sidekiq.yml
+++ b/compose/sidekiq.yml
@@ -5,4 +5,6 @@ services:
     command: bundle exec sidekiq
     restart: always
     volumes:
-      - "../log:/app/log"
\ No newline at end of file
+      - "../log:/app/log"
+    environment:
+      db_pool_size: 30
diff --git a/compose/telnet-task.yml b/compose/telnet-task.yml
index 6929a1d9..caa14fa2 100644
--- a/compose/telnet-task.yml
+++ b/compose/telnet-task.yml
@@ -4,3 +4,5 @@ services:
     env_file: ../.env
     command: bundle exec rake telnet:push
     restart: always
+    environment:
+      db_pool_size: 5