diff --git a/runtime/themes/github_dark.toml b/runtime/themes/github_dark.toml
index 4f9aa562b0ed..6b3354848c97 100644
--- a/runtime/themes/github_dark.toml
+++ b/runtime/themes/github_dark.toml
@@ -60,6 +60,7 @@ label = "scale.red.3"
 "ui.text.focus" = { fg = "fg.default" }
 "ui.text.inactive" = "fg.subtle"
 "ui.virtual" = { fg = "scale.gray.6" }
+"ui.virtual.ruler" = { bg = "canvas.subtle" }
 
 "ui.selection" = { bg = "scale.blue.8" }
 "ui.selection.primary" = { bg = "scale.blue.7" }
diff --git a/runtime/themes/github_light.toml b/runtime/themes/github_light.toml
index 3e2269698339..e6912a987c60 100644
--- a/runtime/themes/github_light.toml
+++ b/runtime/themes/github_light.toml
@@ -60,6 +60,7 @@ label = "scale.red.5"
 "ui.text.focus" = { fg = "fg.default" }
 "ui.text.inactive" = "fg.subtle"
 "ui.virtual" = { fg = "scale.gray.2" }
+"ui.virtual.ruler" = { bg = "canvas.subtle" }
 
 "ui.selection" = { bg = "scale.blue.0" }
 "ui.selection.primary" = { bg = "scale.blue.1" }