diff --git a/slack_sdk/http_retry/__init__.py b/slack_sdk/http_retry/__init__.py
index 6e684a01e..83c6315cf 100644
--- a/slack_sdk/http_retry/__init__.py
+++ b/slack_sdk/http_retry/__init__.py
@@ -4,7 +4,7 @@
     RateLimitErrorRetryHandler,  # noqa
 )  # noqa
 from .interval_calculator import RetryIntervalCalculator  # noqa
-from .builtin_interval_calculators import (
+from .builtin_interval_calculators import (  # noqa
     FixedValueRetryIntervalCalculator,  # noqa
     BackoffRetryIntervalCalculator,  # noqa
 )  # noqa
@@ -16,11 +16,11 @@
 connect_error_retry_handler = ConnectionErrorRetryHandler()  # noqa
 rate_limit_error_retry_handler = RateLimitErrorRetryHandler()  # noqa
 
-default_retry_handlers = [
-    connect_error_retry_handler,
+default_retry_handlers = [  # noqa
+    connect_error_retry_handler,  # noqa
 ]  # noqa
 
-all_builtin_retry_handlers = [
-    connect_error_retry_handler,
-    rate_limit_error_retry_handler,
+all_builtin_retry_handlers = [  # noqa
+    connect_error_retry_handler,  # noqa
+    rate_limit_error_retry_handler,  # noqa
 ]  # noqa
diff --git a/slack_sdk/http_retry/builtin_interval_calculators.py b/slack_sdk/http_retry/builtin_interval_calculators.py
index 5f70c58ab..6354171f5 100644
--- a/slack_sdk/http_retry/builtin_interval_calculators.py
+++ b/slack_sdk/http_retry/builtin_interval_calculators.py
@@ -40,5 +40,5 @@ def __init__(self, backoff_factor: float = 0.5, jitter: Optional[Jitter] = None)
 
     def calculate_sleep_duration(self, current_attempt: int) -> float:
         interval = self.backoff_factor * (2 ** (current_attempt))
-        sleep_duration = self.jitter.add_jitter_amount(interval)
+        sleep_duration = self.jitter.recalculate(interval)
         return sleep_duration
diff --git a/slack_sdk/http_retry/jitter.py b/slack_sdk/http_retry/jitter.py
index 5e2586c7b..852eaac60 100644
--- a/slack_sdk/http_retry/jitter.py
+++ b/slack_sdk/http_retry/jitter.py
@@ -4,8 +4,8 @@
 class Jitter:
     """Jitter interface"""
 
-    def add_jitter_amount(self, duration: float) -> float:
-        """Adds a jitter amount to the given duration.
+    def recalculate(self, duration: float) -> float:
+        """Recalculate the given duration.
         see also: https://aws.amazon.com/blogs/architecture/exponential-backoff-and-jitter/
 
         Args:
@@ -20,5 +20,5 @@ def add_jitter_amount(self, duration: float) -> float:
 class RandomJitter(Jitter):
     """Random jitter implementation"""
 
-    def add_jitter_amount(self, duration: float) -> float:
+    def recalculate(self, duration: float) -> float:
         return duration + random.random()