diff --git a/README.md b/README.md
index 3a52b187..7134e9a9 100644
--- a/README.md
+++ b/README.md
@@ -63,10 +63,12 @@ feat(ui): Add `Button` component
 ```yml
         with:
           # Configure which types are allowed (newline-delimited).
+          # These are regex patterns auto-wrapped in `^ $`.
           # Default: https://github.com/commitizen/conventional-commit-types
           types: |
             fix
             feat
+            JIRA-\d+
           # Configure which scopes are allowed (newline-delimited).
           # These are regex patterns auto-wrapped in `^ $`.
           scopes: |
diff --git a/action.yml b/action.yml
index a233ca77..e6501a21 100644
--- a/action.yml
+++ b/action.yml
@@ -9,7 +9,7 @@ branding:
   color: 'green'
 inputs:
   types:
-    description: "Provide custom types (newline delimited) if you don't want the default ones from https://www.conventionalcommits.org."
+    description: "Provide custom types (newline delimited) if you don't want the default ones from https://www.conventionalcommits.org. These are regex patterns auto-wrapped in `^ $`."
     required: false
   scopes:
     description: 'Configure which scopes are allowed (newline delimited). These are regex patterns auto-wrapped in `^ $`.'
diff --git a/src/validatePrTitle.js b/src/validatePrTitle.js
index cc88fd5d..aa80cb42 100644
--- a/src/validatePrTitle.js
+++ b/src/validatePrTitle.js
@@ -71,7 +71,7 @@ export default async function validatePrTitle(
     raiseError(`No subject found in pull request title "${prTitle}".`);
   }
 
-  if (!types.includes(result.type)) {
+  if (!types.some((type) => new RegExp(`^${type}$`).test(result.type))) {
     raiseError(
       `Unknown release type "${
         result.type
diff --git a/src/validatePrTitle.test.js b/src/validatePrTitle.test.js
index eed3af01..4d2d2c5d 100644
--- a/src/validatePrTitle.test.js
+++ b/src/validatePrTitle.test.js
@@ -39,6 +39,86 @@ it('throws for PR titles with an unknown type', async () => {
   );
 });
 
+describe('regex types', () => {
+  const headerPattern = /^([\w-]*)(?:\(([\w$.\-*/ ]*)\))?: (.*)$/;
+
+  it('allows a regex matching type', async () => {
+    await validatePrTitle('JIRA-123: Bar', {
+      types: ['JIRA-\\d+'],
+      headerPattern
+    });
+  });
+
+  it('can be used for dynamic Jira keys', async () => {
+    const inputs = ['JIRA-123', 'P-123', 'INT-31', 'CONF-0'];
+
+    for (let index = 0; index < inputs.length; index++) {
+      await validatePrTitle(`${inputs[index]}: did the thing`, {
+        types: ['[A-Z]+-\\d+'],
+        headerPattern
+      });
+    }
+  });
+
+  it('throws for PR titles without a type', async () => {
+    await expect(
+      validatePrTitle('Fix JIRA-123 bug', {
+        types: ['JIRA-\\d+'],
+        headerPattern
+      })
+    ).rejects.toThrow(
+      'No release type found in pull request title "Fix JIRA-123 bug".'
+    );
+  });
+
+  it('throws for PR titles with only a type', async () => {
+    await expect(
+      validatePrTitle('JIRA-123:', {
+        types: ['JIRA-\\d+'],
+        headerPattern
+      })
+    ).rejects.toThrow(
+      'No release type found in pull request title "JIRA-123:".'
+    );
+  });
+
+  it('throws for PR titles without a subject', async () => {
+    await expect(
+      validatePrTitle('JIRA-123: ', {
+        types: ['JIRA-\\d+'],
+        headerPattern
+      })
+    ).rejects.toThrow('No subject found in pull request title "JIRA-123: ".');
+  });
+
+  it('throws for PR titles that do not match the regex', async () => {
+    await expect(
+      validatePrTitle('CONF-123: ', {
+        types: ['JIRA-\\d+'],
+        headerPattern
+      })
+    ).rejects.toThrow('No subject found in pull request title "CONF-123: ".');
+  });
+
+  it('throws when an unknown type is detected for auto-wrapping regex', async () => {
+    await expect(
+      validatePrTitle('JIRA-123A: Bar', {
+        types: ['JIRA-\\d+'],
+        headerPattern
+      })
+    ).rejects.toThrow(
+      'Unknown release type "JIRA-123A" found in pull request title "JIRA-123A: Bar". \n\nAvailable types:\n - JIRA-\\d+'
+    );
+  });
+
+  it('allows scopes when using a regex for the type', async () => {
+    await validatePrTitle('JIRA-123(core): Bar', {
+      types: ['JIRA-\\d+'],
+      headerPattern
+    });
+  });
+});
+
 describe('defined scopes', () => {
   it('allows a missing scope by default', async () => {
     await validatePrTitle('fix: Bar');