diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index bc990993..7561bbea 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -1,7 +1,7 @@
 version: 2
 
 build:
-  os: "ubuntu-20.04"
+  os: "ubuntu-24.04"
   tools:
     python: "3.10"
   jobs:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8edd47e7..ee087130 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Changed
 - Drop Python 3.6 support (PR #327).
 
+### Fixed
+- Reduce idle CPU usage in `ConnectionPool` while waiting for
+  queued requests (PR #336).
+- Bump readthedocs build os version to ubuntu-24.04 (PR #336).
+  Ubuntu-20.04 is no longer supported.
+
 ## 1.2.0 - 2024-03-27
 
 ### Added
diff --git a/tarantool/connection_pool.py b/tarantool/connection_pool.py
index f1e675b3..1734402a 100644
--- a/tarantool/connection_pool.py
+++ b/tarantool/connection_pool.py
@@ -660,8 +660,12 @@ def _request_process_loop(self, key, unit, last_refresh):
         """
 
         while unit.request_processing_enabled:
-            if not unit.input_queue.empty():
-                task = unit.input_queue.get()
+            try:
+                task = unit.input_queue.get(timeout=self.refresh_delay)
+            except queue.Empty:
+                task = None
+
+            if task:
                 method = getattr(Connection, task.method_name)
                 try:
                     resp = method(unit.conn, *task.args, **task.kwargs)