diff --git a/apps/block_scout_web/config/config.exs b/apps/block_scout_web/config/config.exs
index f38ed779b5..e601e299f8 100644
--- a/apps/block_scout_web/config/config.exs
+++ b/apps/block_scout_web/config/config.exs
@@ -35,6 +35,11 @@ config :block_scout_web, BlockScoutWeb.Counters.BlocksIndexedCounter, enabled: t
 # Configures the endpoint
 config :block_scout_web, BlockScoutWeb.Endpoint,
   instrumenters: [BlockScoutWeb.Prometheus.Instrumenter, SpandexPhoenix.Instrumenter],
+  http: [
+    protocol_options: [
+      idle_timeout: 90_000
+    ]
+  ],
   url: [
     host: "localhost",
     path: System.get_env("NETWORK_PATH") || "/"
diff --git a/apps/block_scout_web/config/dev.exs b/apps/block_scout_web/config/dev.exs
index 27ce5aff40..ce955a764c 100644
--- a/apps/block_scout_web/config/dev.exs
+++ b/apps/block_scout_web/config/dev.exs
@@ -15,8 +15,16 @@ port =
   end
 
 config :block_scout_web, BlockScoutWeb.Endpoint,
-  http: [port: port || 4000],
+  http: [
+    protocol_options: [
+      idle_timeout: 90_000
+    ],
+    port: port || 4000
+  ],
   https: [
+    protocol_options: [
+      idle_timeout: 90_000
+    ],
     port: (port && port + 1) || 4001,
     cipher_suite: :strong,
     certfile: System.get_env("CERTFILE") || "priv/cert/selfsigned.pem",