diff --git a/packages/ui/src/components/views/GitView.tsx b/packages/ui/src/components/views/GitView.tsx
index b651ceb3..7ac5eaed 100644
--- a/packages/ui/src/components/views/GitView.tsx
+++ b/packages/ui/src/components/views/GitView.tsx
@@ -2315,7 +2315,7 @@ export const GitView: React.FC = () => {
       </div>
 
       <Dialog open={isHistoryDialogOpen} onOpenChange={setIsHistoryDialogOpen}>
-        <DialogContent className="max-w-5xl max-h-[80vh] flex flex-col overflow-hidden">
+        <DialogContent className="max-w-5xl h-[90vh] max-h-[90vh] flex flex-col overflow-hidden">
           <DialogHeader>
             <DialogTitle>{t('gitView.history.title')}</DialogTitle>
             <DialogDescription>
@@ -2334,6 +2334,7 @@ export const GitView: React.FC = () => {
               loadingCommitHashes={loadingCommitHashes}
               onCopyHash={handleCopyCommitHash}
               showHeader={false}
+              contentMaxHeightClassName="h-full max-h-none"
               branchDivider={historyBranchDivider}
             />
           </div>
diff --git a/packages/ui/src/components/views/git/HistorySection.tsx b/packages/ui/src/components/views/git/HistorySection.tsx
index 9aee192f..fa61a9ac 100644
--- a/packages/ui/src/components/views/git/HistorySection.tsx
+++ b/packages/ui/src/components/views/git/HistorySection.tsx
@@ -34,6 +34,7 @@ interface HistorySectionProps {
   loadingCommitHashes: Set<string>;
   onCopyHash: (hash: string) => void;
   showHeader?: boolean;
+  contentMaxHeightClassName?: string;
   branchDivider?: {
     insertBeforeIndex: number;
     branchName: string;
@@ -52,6 +53,7 @@ export const HistorySection: React.FC<HistorySectionProps> = ({
   loadingCommitHashes,
   onCopyHash,
   showHeader = true,
+  contentMaxHeightClassName = 'max-h-[50vh]',
   branchDivider = null,
 }) => {
   const { t } = useI18n();
@@ -96,7 +98,7 @@ export const HistorySection: React.FC<HistorySectionProps> = ({
   );
 
   const content = (
-    <ScrollableOverlay outerClassName="min-h-0 max-h-[50vh]" className="w-full">
+    <ScrollableOverlay outerClassName={`min-h-0 ${contentMaxHeightClassName}`} className="h-full w-full">
       {log.all.length === 0 ? (
         <div className="flex h-full items-center justify-center p-4">
           <p className="typography-ui-label text-muted-foreground">
@@ -134,10 +136,10 @@ export const HistorySection: React.FC<HistorySectionProps> = ({
 
   if (!showHeader) {
     if (hasSplitHistory) {
-      return <section>{content}</section>;
+      return <section className="h-full min-h-0">{content}</section>;
     }
     return (
-      <section className="rounded-xl border border-border/60 bg-background/70 overflow-hidden">
+      <section className="h-full min-h-0 rounded-xl border border-border/60 bg-background/70 overflow-hidden">
         {content}
       </section>
     );