diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 990d1d3..a82ba2b 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -1,6 +1,6 @@
 name: Test
 
-on: push
+on: [push, workflow_dispatch]
 
 jobs:
   validate-notebooks:
diff --git a/environment.yml b/environment.yml
index 48397ff..1afc0ee 100644
--- a/environment.yml
+++ b/environment.yml
@@ -3,7 +3,7 @@ channels:
     - defaults
     - conda-forge
 dependencies:
-    - python=3.11
+    - python=3.12
     - pip>=22.1
     - nbconvert>=6.1
     - numpy=1.26
diff --git a/notebooks/00-Introduction.ipynb b/notebooks/00-Introduction.ipynb
index 1644365..9cd6b5a 100644
--- a/notebooks/00-Introduction.ipynb
+++ b/notebooks/00-Introduction.ipynb
@@ -362,7 +362,7 @@
     "### Python\n",
     "\n",
     "* Python is the programming language we'll be learning in this class.\n",
-    "* We are using Python 3.11, the (second-)newest version of Python, for the entirety of this class.\n",
+    "* We are using Python 3.12, the newest version of Python, for the entirety of this class.\n",
     "* The core libaries we will be using are `pandas` and `seaborn`."
    ]
   },