diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 3720f045..ae0ee64d 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -29,6 +29,8 @@ repos:
     rev: 0.7.17
     hooks:
       - id: mdformat
+        additional_dependencies:
+          [mdformat-gfm, mdformat-frontmatter, mdformat-footnote]
 
   - repo: https://github.com/pre-commit/mirrors-prettier
     rev: "v4.0.0-alpha.8"
diff --git a/docs/migration.md b/docs/migration.md
index 92867a72..d3aa74ec 100644
--- a/docs/migration.md
+++ b/docs/migration.md
@@ -19,7 +19,7 @@ The following `loop` properties are now asyncio loops:
 - `jupyter_client.threaded.ThreadedKernelClient.ioloop`
 
 The `jupyter_client.kernelapp.KernelApp` class now subclasses
-`jupyter_core.application.JupyterAsyncApp`, and  performs its initialization
+`jupyter_core.application.JupyterAsyncApp`, and performs its initialization
 from within an asyncio loop.
 
 The following function was added as a shim to the `jupyter_core` utility: