diff --git a/config.yml b/config.yml
index 6cfa0188..79465841 100644
--- a/config.yml
+++ b/config.yml
@@ -9,6 +9,7 @@ buildDrafts: false
 buildFuture: false
 buildExpired: false
 enableEmoji: true
+pygmentsUseClasses: true
 # googleAnalytics: UA-123-45
 
 minify:
diff --git a/content/posts/papermod/papermod-installation.md b/content/posts/papermod/papermod-installation.md
index cf2e13fd..94ddfac1 100644
--- a/content/posts/papermod/papermod-installation.md
+++ b/content/posts/papermod/papermod-installation.md
@@ -137,6 +137,7 @@ enableRobotsTXT: true
 buildDrafts: false
 buildFuture: false
 buildExpired: false
+pygmentsUseClasses: true
 
 googleAnalytics: UA-123-45