diff --git a/extensions/github/markdown.css b/extensions/github/markdown.css
index a8cb5840ccc..84441f42b16 100644
--- a/extensions/github/markdown.css
+++ b/extensions/github/markdown.css
@@ -4,6 +4,8 @@
  *--------------------------------------------------------------------------------------------*/
 
 .vscode-dark img[src$=\#gh-light-mode-only],
-.vscode-light img[src$=\#gh-dark-mode-only] {
+.vscode-light img[src$=\#gh-dark-mode-only],
+.vscode-high-contrast img[src$=\#gh-light-mode-only],
+.vscode-high-contrast-light img[src$=\#gh-dark-mode-only] {
 	display: none;
 }