diff --git a/tpl/tplimpl/embedded/templates.autogen.go b/tpl/tplimpl/embedded/templates.autogen.go
index 821354c99..70586ed33 100644
--- a/tpl/tplimpl/embedded/templates.autogen.go
+++ b/tpl/tplimpl/embedded/templates.autogen.go
@@ -211,7 +211,7 @@ if (!doNotTrack) {
 {{ end }}
 {{- if not .Lastmod.IsZero }}<meta property="article:modified_time" {{ .Lastmod.Format $iso8601 | printf "content=%q" | safeHTMLAttr }} />{{ end }}
 {{- else }}
-{{- if not .Date.IsZero }}<meta property="og:updated_time" {{ .Date.Format $iso8601 | printf "content=%q" | safeHTMLAttr }} />
+{{- if not .Date.IsZero }}<meta property="og:updated_time" {{ .Lastmod.Format $iso8601 | printf "content=%q" | safeHTMLAttr }} />
 {{- end }}
 {{- end }}{{/* .IsPage */}}
 
diff --git a/tpl/tplimpl/embedded/templates/opengraph.html b/tpl/tplimpl/embedded/templates/opengraph.html
index 68b4de5a3..07d9775d0 100644
--- a/tpl/tplimpl/embedded/templates/opengraph.html
+++ b/tpl/tplimpl/embedded/templates/opengraph.html
@@ -22,7 +22,7 @@
 {{ end }}
 {{- if not .Lastmod.IsZero }}<meta property="article:modified_time" {{ .Lastmod.Format $iso8601 | printf "content=%q" | safeHTMLAttr }} />{{ end }}
 {{- else }}
-{{- if not .Date.IsZero }}<meta property="og:updated_time" {{ .Date.Format $iso8601 | printf "content=%q" | safeHTMLAttr }} />
+{{- if not .Date.IsZero }}<meta property="og:updated_time" {{ .Lastmod.Format $iso8601 | printf "content=%q" | safeHTMLAttr }} />
 {{- end }}
 {{- end }}{{/* .IsPage */}}