diff --git a/components/timeline/__tests__/__snapshots__/demo.test.js.snap b/components/timeline/__tests__/__snapshots__/demo.test.js.snap
index bfaf4bc251a5..f2f006eed351 100644
--- a/components/timeline/__tests__/__snapshots__/demo.test.js.snap
+++ b/components/timeline/__tests__/__snapshots__/demo.test.js.snap
@@ -2,7 +2,7 @@
 
 exports[`renders ./components/timeline/demo/alternate.md correctly 1`] = `
 <ul
-  class="ant-timeline alternate"
+  class="ant-timeline ant-timeline-alternate"
 >
   <li
     class="ant-timeline-item ant-timeline-item-left"
@@ -109,7 +109,7 @@ exports[`renders ./components/timeline/demo/alternate.md correctly 1`] = `
 
 exports[`renders ./components/timeline/demo/basic.md correctly 1`] = `
 <ul
-  class="ant-timeline"
+  class="ant-timeline ant-timeline-"
 >
   <li
     class="ant-timeline-item"
@@ -176,7 +176,7 @@ exports[`renders ./components/timeline/demo/basic.md correctly 1`] = `
 
 exports[`renders ./components/timeline/demo/color.md correctly 1`] = `
 <ul
-  class="ant-timeline"
+  class="ant-timeline ant-timeline-"
 >
   <li
     class="ant-timeline-item"
@@ -259,7 +259,7 @@ exports[`renders ./components/timeline/demo/color.md correctly 1`] = `
 
 exports[`renders ./components/timeline/demo/custom.md correctly 1`] = `
 <ul
-  class="ant-timeline"
+  class="ant-timeline ant-timeline-"
 >
   <li
     class="ant-timeline-item"
@@ -332,7 +332,7 @@ exports[`renders ./components/timeline/demo/custom.md correctly 1`] = `
 exports[`renders ./components/timeline/demo/pending.md correctly 1`] = `
 <div>
   <ul
-    class="ant-timeline ant-timeline-pending"
+    class="ant-timeline ant-timeline-pending ant-timeline-"
   >
     <li
       class="ant-timeline-item"
@@ -413,7 +413,7 @@ exports[`renders ./components/timeline/demo/pending.md correctly 1`] = `
 
 exports[`renders ./components/timeline/demo/right.md correctly 1`] = `
 <ul
-  class="ant-timeline right"
+  class="ant-timeline ant-timeline-right"
 >
   <li
     class="ant-timeline-item ant-timeline-item-right"