diff --git a/themes/oldtheme/assets/css/common/post-single.css b/themes/oldtheme/assets/css/common/post-single.css
index 0619d03..36cfe2e 100644
--- a/themes/oldtheme/assets/css/common/post-single.css
+++ b/themes/oldtheme/assets/css/common/post-single.css
@@ -41,7 +41,7 @@
 .post-content {   
     padding-top: var(--gap);
     font-size: 16px;
-    font-weight: 350;
+    font-weight: 380;
     font-family: inherit;
     color: var(--content);
     letter-spacing: 0.1px;