diff --git a/packages/docusaurus-theme-translations/locales/ja/theme-common.json b/packages/docusaurus-theme-translations/locales/ja/theme-common.json
index 1a34116b95..17873d8fda 100644
--- a/packages/docusaurus-theme-translations/locales/ja/theme-common.json
+++ b/packages/docusaurus-theme-translations/locales/ja/theme-common.json
@@ -6,7 +6,7 @@
   "theme.CodeBlock.copyButtonAriaLabel": "クリップボードにコードをコピー",
   "theme.CodeBlock.wordWrapToggle": "折り返し",
   "theme.DocSidebarItem.collapseCategoryAriaLabel": "'{label}'の目次を隠す",
-  "theme.DocSidebarItem.expandCategoryAriaLabel": "'{label}'の目次を表示",
+  "theme.DocSidebarItem.expandCategoryAriaLabel": "'{label}'の目次を開く",
   "theme.ErrorPageContent.title": "エラーが発生しました",
   "theme.ErrorPageContent.tryAgain": "もう一度試してください",
   "theme.NavBar.navAriaLabel": "ナビゲーション",
@@ -46,13 +46,13 @@
   "theme.docs.paginator.navAriaLabel": "ドキュメントページ",
   "theme.docs.paginator.next": "次へ",
   "theme.docs.paginator.previous": "前へ",
-  "theme.docs.sidebar.closeSidebarButtonAriaLabel": "Close navigation bar",
+  "theme.docs.sidebar.closeSidebarButtonAriaLabel": "ナビゲーションバーを閉じる",
   "theme.docs.sidebar.collapseButtonAriaLabel": "サイドバーを隠す",
   "theme.docs.sidebar.collapseButtonTitle": "サイドバーを隠す",
   "theme.docs.sidebar.expandButtonAriaLabel": "サイドバーを開く",
   "theme.docs.sidebar.expandButtonTitle": "サイドバーを開く",
   "theme.docs.sidebar.navAriaLabel": "ドキュメントのサイドバー",
-  "theme.docs.sidebar.toggleSidebarButtonAriaLabel": "Toggle navigation bar",
+  "theme.docs.sidebar.toggleSidebarButtonAriaLabel": "ナビゲーションバーを開く",
   "theme.docs.tagDocListPageTitle": "「{tagName}」タグのついた{nDocsTagged}",
   "theme.docs.tagDocListPageTitle.nDocsTagged": "{count}記事",
   "theme.docs.versionBadge.label": "バージョン: {versionLabel}",