diff --git a/.github/workflows/deploy-pages.yml b/.github/workflows/deploy-pages.yml
index 0202bae..5eab7d2 100644
--- a/.github/workflows/deploy-pages.yml
+++ b/.github/workflows/deploy-pages.yml
@@ -35,8 +35,8 @@ jobs:
       - name: Build Sphinx docs
         run: ./build-docs.sh
 
-      - name: Set Binder Python version
-        run: cp runtime.txt docs/build/html/runtime.txt
+      - name: Add Binder environment configuration
+        run: cp environment.yml docs/build/html/environment.yml
 
       - name: Publish built docs for Binder
         uses: peaceiris/actions-gh-pages@v4
diff --git a/environment.yml b/environment.yml
new file mode 100644
index 0000000..12591c9
--- /dev/null
+++ b/environment.yml
@@ -0,0 +1,8 @@
+name: binder
+channels:
+  - conda-forge
+dependencies:
+  - python=3.11
+  - pip
+  - pip:
+      - -r binder/requirements.txt
diff --git a/runtime.txt b/runtime.txt
deleted file mode 100644
index 67ebc4e..0000000
--- a/runtime.txt
+++ /dev/null
@@ -1 +0,0 @@
-python-3.11