diff --git a/environment.yml b/environment.yml
index 9aa048a..4fc3b50 100644
--- a/environment.yml
+++ b/environment.yml
@@ -11,7 +11,7 @@ dependencies:
   - pip
   - pip:
     - jupyter-book>=1.0.4post1,<2.0
-    - quantecon-book-theme==0.21.0
+    - quantecon-book-theme==0.22.0
     - sphinx-tojupyter==0.6.0
     - sphinxext-rediraffe==0.3.0
     - sphinx-exercise==1.2.1
diff --git a/lectures/_config.yml b/lectures/_config.yml
index a83506d..b5ad2d1 100644
--- a/lectures/_config.yml
+++ b/lectures/_config.yml
@@ -59,6 +59,9 @@ sphinx:
           url: http://www.tomsargent.com/
         - name: John Stachurski
           url: https://johnstachurski.net/      
+      translators:
+        - name: Adisankar Manoj Thanuja
+          url: https://www.linkedin.com/in/adisankar-m-t/
       dark_logo: quantecon-logo-transparent.png
       header_organisation_url: https://quantecon.org
       header_organisation: QuantEcon