diff --git a/Editor/Localization/ja.po b/Editor/Localization/ja.po
index e30cd42..120bb46 100644
--- a/Editor/Localization/ja.po
+++ b/Editor/Localization/ja.po
@@ -560,8 +560,8 @@ msgid "Slack Token"
 msgstr "Slackトークン"
 
 # slackToken tooltip
-msgid "Slack API token. If omitted, it will not be sent."
-msgstr "Slack通知に使用するWeb APIトークン（省略時は送信されません）"
+msgid "Slack Bot OAuth token. If omitted, it will not be sent."
+msgstr "Slack通知に使用するBotのOAuthトークン（省略時は送信されません）"
 
 # slackChannels
 msgid "Slack Channels"
diff --git a/Editor/UI/Reporters/SlackReporterEditor.cs b/Editor/UI/Reporters/SlackReporterEditor.cs
index 1fcf6b9..2392942 100644
--- a/Editor/UI/Reporters/SlackReporterEditor.cs
+++ b/Editor/UI/Reporters/SlackReporterEditor.cs
@@ -24,7 +24,7 @@ public class SlackReporterEditor : UnityEditor.Editor
         private GUIContent _descriptionGUIContent;
 
         private static readonly string s_slackToken = L10n.Tr("Slack Token");
-        private static readonly string s_slackTokenTooltip = L10n.Tr("Slack API token. If omitted, it will not be sent.");
+        private static readonly string s_slackTokenTooltip = L10n.Tr("Slack Bot OAuth token. If omitted, it will not be sent.");
         private SerializedProperty _slackTokenProp;
         private GUIContent _slackTokenGUIContent;
 
diff --git a/Runtime/Reporters/SlackReporter.cs b/Runtime/Reporters/SlackReporter.cs
index 12bfac8..fa92aee 100644
--- a/Runtime/Reporters/SlackReporter.cs
+++ b/Runtime/Reporters/SlackReporter.cs
@@ -16,7 +16,7 @@ namespace DeNA.Anjin.Reporters
     public class SlackReporter : AbstractReporter
     {
         /// <summary>
-        /// Slack API token.
+        /// Slack Bot OAuth token.
         /// </summary>
         public string slackToken;