diff --git a/environment.yml b/environment.yml
index c08e1880..4bf8e594 100644
--- a/environment.yml
+++ b/environment.yml
@@ -10,7 +10,7 @@ dependencies:
     - quantecon-book-theme==0.22.1
     - sphinx-tojupyter==0.6.0
     - sphinxext-rediraffe==0.3.0
-    - sphinx-exercise==1.2.1
+    - sphinx-exercise==1.2.2
     - sphinx-proof==0.4.0
     - sphinxcontrib-youtube==1.5.0
     - sphinx-togglebutton==0.4.5