diff --git a/lectures/myst.yml b/lectures/myst.yml
index 06e15ba..ea10041 100644
--- a/lectures/myst.yml
+++ b/lectures/myst.yml
@@ -119,4 +119,14 @@ project:
 site:
   # Pinned theme release (see https://github.com/QuantEcon/quantecon-theme.mystmd/releases);
   # bump the vX.Y.Z in this URL to take a new theme version.
-  template: https://github.com/QuantEcon/quantecon-theme.mystmd/releases/download/v2.7.0/quantecon-theme.zip
+  template: https://github.com/QuantEcon/quantecon-theme.mystmd/releases/download/v3.0.0/quantecon-theme.zip
+  options:
+    # The site's public URL. The theme emits the canonical link, og:url and an
+    # absolute og:image only when this is set, and this site is served under a
+    # sub-path, so the value carries it.
+    site_url: https://quantecon.github.io/lecture-wasm/
+    # No launch options on purpose. From theme v3.0.0 the Launch control is
+    # opt-in and the notebook repository has to be named here; nothing is
+    # derived from `project.github` any more. There is no
+    # QuantEcon/lecture-wasm.notebooks repository, so naming one would put a
+    # dead link on every page -- which is what the derived value used to do.
diff --git a/lectures/short_path.md b/lectures/short_path.md
index ba87348..0478082 100644
--- a/lectures/short_path.md
+++ b/lectures/short_path.md
@@ -12,14 +12,6 @@ kernelspec:
 ---
 
 (short_path)=
-```{raw} html
-<div id="qe-notebook-header" align="right" style="text-align:right;">
-        <a href="https://quantecon.org/" title="quantecon.org">
-                <img style="width:250px;display:inline;" width="250px" src="https://assets.quantecon.org/img/qe-menubar-logo.svg" alt="QuantEcon">
-        </a>
-</div>
-```
-
 # Shortest Paths
 
 ```{index} single: Dynamic Programming; Shortest Paths