diff --git a/apps/desktop/src/session/components/streamdown.tsx b/apps/desktop/src/session/components/streamdown.tsx
index 2cf862f31c..9cebfe45df 100644
--- a/apps/desktop/src/session/components/streamdown.tsx
+++ b/apps/desktop/src/session/components/streamdown.tsx
@@ -6,17 +6,17 @@ const HEADING_WITH_MARGIN = "mt-4 first:mt-0";
 
 export const streamdownComponents = {
   h1: (props: React.HTMLAttributes<HTMLHeadingElement>) => (
-    <h1 className={cn([HEADING_SHARED, HEADING_WITH_MARGIN, "text-xl"])}>
+    <h3 className={cn([HEADING_SHARED, HEADING_WITH_MARGIN, "text-base"])}>
       {props.children as React.ReactNode}
-    </h1>
+    </h3>
   ),
   h2: (props: React.HTMLAttributes<HTMLHeadingElement>) => (
-    <h2 className={cn([HEADING_SHARED, HEADING_WITH_MARGIN, "text-lg"])}>
+    <h2 className={cn([HEADING_SHARED, HEADING_WITH_MARGIN, "text-sm"])}>
       {props.children as React.ReactNode}
     </h2>
   ),
   h3: (props: React.HTMLAttributes<HTMLHeadingElement>) => (
-    <h3 className={cn([HEADING_SHARED, HEADING_WITH_MARGIN, "text-base"])}>
+    <h3 className={cn([HEADING_SHARED, HEADING_WITH_MARGIN, "text-sm"])}>
       {props.children as React.ReactNode}
     </h3>
   ),
diff --git a/packages/tiptap/src/shared/streamdown-components.tsx b/packages/tiptap/src/shared/streamdown-components.tsx
index 472ed5f2a4..9aed15517d 100644
--- a/packages/tiptap/src/shared/streamdown-components.tsx
+++ b/packages/tiptap/src/shared/streamdown-components.tsx
@@ -7,17 +7,17 @@ const HEADING_WITH_MARGIN = "mt-4 first:mt-0";
 
 export const streamdownComponents = {
   h1: (props: React.HTMLAttributes<HTMLHeadingElement>) => (
-    <h1 className={cn([HEADING_SHARED, HEADING_WITH_MARGIN, "text-xl"])}>
+    <h3 className={cn([HEADING_SHARED, HEADING_WITH_MARGIN, "text-base"])}>
       {props.children as React.ReactNode}
-    </h1>
+    </h3>
   ),
   h2: (props: React.HTMLAttributes<HTMLHeadingElement>) => (
-    <h2 className={cn([HEADING_SHARED, HEADING_WITH_MARGIN, "text-lg"])}>
+    <h2 className={cn([HEADING_SHARED, HEADING_WITH_MARGIN, "text-sm"])}>
       {props.children as React.ReactNode}
     </h2>
   ),
   h3: (props: React.HTMLAttributes<HTMLHeadingElement>) => (
-    <h3 className={cn([HEADING_SHARED, HEADING_WITH_MARGIN, "text-base"])}>
+    <h3 className={cn([HEADING_SHARED, HEADING_WITH_MARGIN, "text-sm"])}>
       {props.children as React.ReactNode}
     </h3>
   ),