diff --git a/packages/frontend/src/components/MkCode.core.vue b/packages/frontend/src/components/MkCode.core.vue
index 8f43b89533..232a8b66e4 100644
--- a/packages/frontend/src/components/MkCode.core.vue
+++ b/packages/frontend/src/components/MkCode.core.vue
@@ -66,7 +66,7 @@ watch(() => props.lang, (to) => {
 
 	& pre,
 	& code {
-		font-family: Consolas, Monaco, Andale Mono, Ubuntu Mono, monospace;
+		font-family: "JetBrains Mono", "Pretendard JP", Pretendard, Consolas, Monaco, "Andale Mono", "Ubuntu Mono", monospace;
 	}
 }
 
diff --git a/packages/frontend/src/components/MkCode.vue b/packages/frontend/src/components/MkCode.vue
index 54537d8024..38a40f4dd5 100644
--- a/packages/frontend/src/components/MkCode.vue
+++ b/packages/frontend/src/components/MkCode.vue
@@ -29,7 +29,7 @@ const XCode = defineAsyncComponent(() => import('@/components/MkCode.core.vue'))
 <style module lang="scss">
 .codeInlineRoot {
 	display: inline-block;
-	font-family: Consolas, Monaco, Andale Mono, Ubuntu Mono, monospace;
+	font-family: "JetBrains Mono", "Pretendard JP", Pretendard, Consolas, Monaco, "Andale Mono", "Ubuntu Mono", monospace;
 	overflow-wrap: anywhere;
 	color: #D4D4D4;
 	background: #1E1E1E;
diff --git a/packages/frontend/src/components/MkCodeEditor.vue b/packages/frontend/src/components/MkCodeEditor.vue
index 98a009ecc0..46acbc9f25 100644
--- a/packages/frontend/src/components/MkCodeEditor.vue
+++ b/packages/frontend/src/components/MkCodeEditor.vue
@@ -157,7 +157,7 @@ watch(v, () => {
 	padding: 12px;
 	line-height: 1.5em;
 	font-size: 1em;
-	font-family: Consolas, Monaco, Andale Mono, Ubuntu Mono, monospace;
+	font-family: "JetBrains Mono", "Pretendard JP", Pretendard, Consolas, Monaco, "Andale Mono", "Ubuntu Mono", monospace;
 }
 
 .textarea::selection {
diff --git a/packages/frontend/src/style.scss b/packages/frontend/src/style.scss
index ac2faf78e7..ee1c46ad9c 100644
--- a/packages/frontend/src/style.scss
+++ b/packages/frontend/src/style.scss
@@ -29,8 +29,8 @@
 
 $default-font: "Pretendard JP", Pretendard, -apple-system, BlinkMacSystemFont, system-ui, Roboto, "Helvetica Neue", "Segoe UI", "Hiragino Sans", "Apple SD Gothic Neo", Meiryo, "Noto Sans JP", "Noto Sans KR", "Malgun Gothic", Osaka, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", sans-serif;
 $system-font: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", Roboto, "Noto Sans KR", "Segoe UI", "Malgun Gothic", "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", sans-serif;
-$monospace-font: "Pretendard JP", Pretendard, "JetBrains Mono", Fira code, Fira Mono, Consolas, Menlo, Courier, monospace !important;
-$code-monospace-font: "JetBrains Mono", "Pretendard JP", Pretendard, Consolas, Monaco, 'Andale Mono', 'Ubuntu Mono', monospace !important;
+$monospace-font: "Pretendard JP", Pretendard, "JetBrains Mono", "Fira code", "Fira Mono", Consolas, Menlo, Courier, monospace !important;
+$code-monospace-font: "JetBrains Mono", "Pretendard JP", Pretendard, Consolas, Monaco, "Andale Mono", "Ubuntu Mono", monospace !important;
 
 :root {
 	--radius: 12px;
@@ -69,7 +69,7 @@ html {
 	overflow-wrap: break-word;
 	font-family: $default-font;
 	// incoming changes from v13
-	// font-family: 'Hiragino Maru Gothic Pro', "BIZ UDGothic", Roboto, HelveticaNeue, Arial, sans-serif;
+	// font-family: "Hiragino Maru Gothic Pro", "BIZ UDGothic", Roboto, HelveticaNeue, Arial, sans-serif;
 	font-size: 14px;
 	line-height: 1.35;
 	text-size-adjust: 100%;