diff --git a/README.md b/README.md
index f51b4d3..cc246eb 100644
--- a/README.md
+++ b/README.md
@@ -4,9 +4,15 @@ A GitHub Action to run the markdownlint-cli2 tool for linting Markdown/CommonMar
 
 ## Inputs
 
-### glob
+### glob (optional)
 
-...
+Glob expression of files to lint
+
+Default: `*.{md,markdown}`
+
+## Outputs
+
+[None]
 
 ## Example
 
diff --git a/dist/index.js b/dist/index.js
index 9759047..3660afc 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -16,8 +16,10 @@ const { "main": markdownlintCli2 } = __nccwpck_require__(9202);
 
 const logMessage = core.info;
 const logError = core.error;
+const glob = core.getInput("glob");
+
 markdownlintCli2({
-  "argv": [],
+  "argv": [ glob ],
   logMessage,
   logError
 }).then(
diff --git a/markdownlint-cli2-action.js b/markdownlint-cli2-action.js
index 1b971f4..8a11252 100644
--- a/markdownlint-cli2-action.js
+++ b/markdownlint-cli2-action.js
@@ -8,8 +8,10 @@ const { "main": markdownlintCli2 } = require("markdownlint-cli2");
 
 const logMessage = core.info;
 const logError = core.error;
+const glob = core.getInput("glob");
+
 markdownlintCli2({
-  "argv": [],
+  "argv": [ glob ],
   logMessage,
   logError
 }).then(