diff --git a/plugins/scaffolder-backend-module-github/src/actions/github.examples.test.ts b/plugins/scaffolder-backend-module-github/src/actions/github.examples.test.ts
index 6a6c6daf13..3c7f27f572 100644
--- a/plugins/scaffolder-backend-module-github/src/actions/github.examples.test.ts
+++ b/plugins/scaffolder-backend-module-github/src/actions/github.examples.test.ts
@@ -155,7 +155,7 @@ describe('publish:github', () => {
     expect(initRepoAndPush).toHaveBeenCalledWith({
       dir: mockContext.workspacePath,
       remoteUrl: 'https://github.com/clone/url.git',
-      defaultBranch: 'master',
+      defaultBranch: 'main',
       auth: { username: 'x-access-token', password: 'tokenlols' },
       logger: mockContext.logger,
       commitMessage: 'initial commit',
diff --git a/plugins/scaffolder-backend-module-github/src/actions/github.test.ts b/plugins/scaffolder-backend-module-github/src/actions/github.test.ts
index 2f629622d0..24bb229d77 100644
--- a/plugins/scaffolder-backend-module-github/src/actions/github.test.ts
+++ b/plugins/scaffolder-backend-module-github/src/actions/github.test.ts
@@ -491,7 +491,7 @@ describe('publish:github', () => {
     expect(initRepoAndPush).toHaveBeenCalledWith({
       dir: mockContext.workspacePath,
       remoteUrl: 'https://github.com/clone/url.git',
-      defaultBranch: 'master',
+      defaultBranch: 'main',
       auth: { username: 'x-access-token', password: 'tokenlols' },
       logger: mockContext.logger,
       commitMessage: 'initial commit',
@@ -570,7 +570,7 @@ describe('publish:github', () => {
     expect(initRepoAndPush).toHaveBeenCalledWith({
       dir: mockContext.workspacePath,
       remoteUrl: 'https://github.com/clone/url.git',
-      defaultBranch: 'master',
+      defaultBranch: 'main',
       auth: { username: 'x-access-token', password: 'tokenlols' },
       logger: mockContext.logger,
       commitMessage: 'initial commit',
@@ -615,7 +615,7 @@ describe('publish:github', () => {
     expect(initRepoAndPush).toHaveBeenCalledWith({
       dir: mockContext.workspacePath,
       remoteUrl: 'https://github.com/clone/url.git',
-      defaultBranch: 'master',
+      defaultBranch: 'main',
       auth: { username: 'x-access-token', password: 'tokenlols' },
       logger: mockContext.logger,
       commitMessage: 'Test commit message',
@@ -1036,7 +1036,7 @@ describe('publish:github', () => {
     );
     expect(mockContext.output).toHaveBeenCalledWith(
       'repoContentsUrl',
-      'https://github.com/html/url/blob/master',
+      'https://github.com/html/url/blob/main',
     );
   });
 
@@ -1088,7 +1088,7 @@ describe('publish:github', () => {
       client: mockOctokit,
       repoName: 'repo',
       logger: mockContext.logger,
-      defaultBranch: 'master',
+      defaultBranch: 'main',
       requireCodeOwnerReviews: false,
       bypassPullRequestAllowances: undefined,
       requiredApprovingReviewCount: 1,
@@ -1118,7 +1118,7 @@ describe('publish:github', () => {
       client: mockOctokit,
       repoName: 'repo',
       logger: mockContext.logger,
-      defaultBranch: 'master',
+      defaultBranch: 'main',
       requireCodeOwnerReviews: false,
       bypassPullRequestAllowances: undefined,
       requiredApprovingReviewCount: 1,
@@ -1147,7 +1147,7 @@ describe('publish:github', () => {
       client: mockOctokit,
       repoName: 'repo',
       logger: mockContext.logger,
-      defaultBranch: 'master',
+      defaultBranch: 'main',
       requireCodeOwnerReviews: false,
       bypassPullRequestAllowances: undefined,
       requiredApprovingReviewCount: 1,
@@ -1175,7 +1175,7 @@ describe('publish:github', () => {
       client: mockOctokit,
       repoName: 'repo',
       logger: mockContext.logger,
-      defaultBranch: 'master',
+      defaultBranch: 'main',
       requireCodeOwnerReviews: false,
       bypassPullRequestAllowances: undefined,
       requiredApprovingReviewCount: 1,
@@ -1264,7 +1264,7 @@ describe('publish:github', () => {
       client: mockOctokit,
       repoName: 'repo',
       logger: mockContext.logger,
-      defaultBranch: 'master',
+      defaultBranch: 'main',
       requireCodeOwnerReviews: false,
       bypassPullRequestAllowances: undefined,
       requiredApprovingReviewCount: 1,
@@ -1295,7 +1295,7 @@ describe('publish:github', () => {
       client: mockOctokit,
       repoName: 'repo',
       logger: mockContext.logger,
-      defaultBranch: 'master',
+      defaultBranch: 'main',
       requireCodeOwnerReviews: false,
       bypassPullRequestAllowances: undefined,
       requiredApprovingReviewCount: 1,
@@ -1329,7 +1329,7 @@ describe('publish:github', () => {
       client: mockOctokit,
       repoName: 'repo',
       logger: mockContext.logger,
-      defaultBranch: 'master',
+      defaultBranch: 'main',
       requireCodeOwnerReviews: false,
       bypassPullRequestAllowances: undefined,
       requiredApprovingReviewCount: 1,
@@ -1364,7 +1364,7 @@ describe('publish:github', () => {
       client: mockOctokit,
       repoName: 'repo',
       logger: mockContext.logger,
-      defaultBranch: 'master',
+      defaultBranch: 'main',
       requireCodeOwnerReviews: false,
       bypassPullRequestAllowances: undefined,
       requiredApprovingReviewCount: 1,
@@ -1400,7 +1400,7 @@ describe('publish:github', () => {
       client: mockOctokit,
       repoName: 'repo',
       logger: mockContext.logger,
-      defaultBranch: 'master',
+      defaultBranch: 'main',
       requireCodeOwnerReviews: false,
       bypassPullRequestAllowances: undefined,
       requiredApprovingReviewCount: 1,
@@ -1436,7 +1436,7 @@ describe('publish:github', () => {
       client: mockOctokit,
       repoName: 'repo',
       logger: mockContext.logger,
-      defaultBranch: 'master',
+      defaultBranch: 'main',
       requireCodeOwnerReviews: false,
       bypassPullRequestAllowances: undefined,
       requiredApprovingReviewCount: 1,
@@ -1473,7 +1473,7 @@ describe('publish:github', () => {
       client: mockOctokit,
       repoName: 'repo',
       logger: mockContext.logger,
-      defaultBranch: 'master',
+      defaultBranch: 'main',
       requireCodeOwnerReviews: false,
       bypassPullRequestAllowances: undefined,
       requiredApprovingReviewCount: 1,
@@ -1503,7 +1503,7 @@ describe('publish:github', () => {
       client: mockOctokit,
       repoName: 'repo',
       logger: mockContext.logger,
-      defaultBranch: 'master',
+      defaultBranch: 'main',
       requireCodeOwnerReviews: false,
       bypassPullRequestAllowances: {
         users: ['user'],
@@ -1535,7 +1535,7 @@ describe('publish:github', () => {
       client: mockOctokit,
       repoName: 'repo',
       logger: mockContext.logger,
-      defaultBranch: 'master',
+      defaultBranch: 'main',
       requireCodeOwnerReviews: false,
       bypassPullRequestAllowances: {
         teams: ['team'],
@@ -1567,7 +1567,7 @@ describe('publish:github', () => {
       client: mockOctokit,
       repoName: 'repo',
       logger: mockContext.logger,
-      defaultBranch: 'master',
+      defaultBranch: 'main',
       requireCodeOwnerReviews: false,
       bypassPullRequestAllowances: {
         apps: ['app'],
@@ -1601,7 +1601,7 @@ describe('publish:github', () => {
       client: mockOctokit,
       repoName: 'repo',
       logger: mockContext.logger,
-      defaultBranch: 'master',
+      defaultBranch: 'main',
       requireCodeOwnerReviews: false,
       bypassPullRequestAllowances: {
         users: ['user'],
@@ -1637,7 +1637,7 @@ describe('publish:github', () => {
       client: mockOctokit,
       repoName: 'repo',
       logger: mockContext.logger,
-      defaultBranch: 'master',
+      defaultBranch: 'main',
       requireCodeOwnerReviews: false,
       bypassPullRequestAllowances: {
         users: ['user1', 'user2'],
@@ -1724,7 +1724,7 @@ describe('publish:github', () => {
         client: mockOctokit,
         repoName: 'repo',
         logger: mockContext.logger,
-        defaultBranch: 'master',
+        defaultBranch: 'main',
         requireCodeOwnerReviews: false,
         bypassPullRequestAllowances: undefined,
         requiredApprovingReviewCount: 1,
@@ -1753,7 +1753,7 @@ describe('publish:github', () => {
         client: mockOctokit,
         repoName: 'repo',
         logger: mockContext.logger,
-        defaultBranch: 'master',
+        defaultBranch: 'main',
         requireCodeOwnerReviews: false,
         bypassPullRequestAllowances: undefined,
         requiredApprovingReviewCount: 1,
@@ -1782,7 +1782,7 @@ describe('publish:github', () => {
         client: mockOctokit,
         repoName: 'repo',
         logger: mockContext.logger,
-        defaultBranch: 'master',
+        defaultBranch: 'main',
         requireCodeOwnerReviews: false,
         bypassPullRequestAllowances: undefined,
         requiredApprovingReviewCount: 1,
diff --git a/plugins/scaffolder-backend-module-github/src/actions/githubRepoPush.examples.test.ts b/plugins/scaffolder-backend-module-github/src/actions/githubRepoPush.examples.test.ts
index e9cc9d95de..6570ce8f4b 100644
--- a/plugins/scaffolder-backend-module-github/src/actions/githubRepoPush.examples.test.ts
+++ b/plugins/scaffolder-backend-module-github/src/actions/githubRepoPush.examples.test.ts
@@ -114,7 +114,7 @@ describe('github:repo:push examples', () => {
     expect(initRepoAndPush).toHaveBeenCalledWith({
       dir: mockContext.workspacePath,
       remoteUrl: 'https://github.com/clone/url.git',
-      defaultBranch: 'master',
+      defaultBranch: 'main',
       auth: { username: 'x-access-token', password: 'tokenlols' },
       logger: mockContext.logger,
       commitMessage: 'initial commit',
diff --git a/plugins/scaffolder-backend-module-github/src/actions/githubRepoPush.test.ts b/plugins/scaffolder-backend-module-github/src/actions/githubRepoPush.test.ts
index 7fdf2e1af6..a3b2478ce6 100644
--- a/plugins/scaffolder-backend-module-github/src/actions/githubRepoPush.test.ts
+++ b/plugins/scaffolder-backend-module-github/src/actions/githubRepoPush.test.ts
@@ -117,7 +117,7 @@ describe('github:repo:push', () => {
     expect(initRepoAndPush).toHaveBeenCalledWith({
       dir: mockContext.workspacePath,
       remoteUrl: 'https://github.com/clone/url.git',
-      defaultBranch: 'master',
+      defaultBranch: 'main',
       auth: { username: 'x-access-token', password: 'tokenlols' },
       logger: mockContext.logger,
       commitMessage: 'initial commit',
@@ -188,7 +188,7 @@ describe('github:repo:push', () => {
     expect(initRepoAndPush).toHaveBeenCalledWith({
       dir: mockContext.workspacePath,
       remoteUrl: 'https://github.com/clone/url.git',
-      defaultBranch: 'master',
+      defaultBranch: 'main',
       auth: { username: 'x-access-token', password: 'tokenlols' },
       logger: mockContext.logger,
       commitMessage: 'initial commit',
@@ -229,7 +229,7 @@ describe('github:repo:push', () => {
     expect(initRepoAndPush).toHaveBeenCalledWith({
       dir: mockContext.workspacePath,
       remoteUrl: 'https://github.com/clone/url.git',
-      defaultBranch: 'master',
+      defaultBranch: 'main',
       auth: { username: 'x-access-token', password: 'tokenlols' },
       logger: mockContext.logger,
       commitMessage: 'initial commit',
@@ -253,7 +253,7 @@ describe('github:repo:push', () => {
     );
     expect(mockContext.output).toHaveBeenCalledWith(
       'repoContentsUrl',
-      'https://github.com/html/url/blob/master',
+      'https://github.com/html/url/blob/main',
     );
   });
 
@@ -298,7 +298,7 @@ describe('github:repo:push', () => {
       client: mockOctokit,
       repoName: 'repository',
       logger: mockContext.logger,
-      defaultBranch: 'master',
+      defaultBranch: 'main',
       requireCodeOwnerReviews: false,
       requiredStatusCheckContexts: [],
       requireBranchesToBeUpToDate: true,
@@ -327,7 +327,7 @@ describe('github:repo:push', () => {
       client: mockOctokit,
       repoName: 'repository',
       logger: mockContext.logger,
-      defaultBranch: 'master',
+      defaultBranch: 'main',
       requireCodeOwnerReviews: false,
       requiredStatusCheckContexts: ['statusCheck'],
       requireBranchesToBeUpToDate: true,
@@ -356,7 +356,7 @@ describe('github:repo:push', () => {
       client: mockOctokit,
       repoName: 'repository',
       logger: mockContext.logger,
-      defaultBranch: 'master',
+      defaultBranch: 'main',
       requireCodeOwnerReviews: false,
       requiredStatusCheckContexts: ['statusCheck'],
       requireBranchesToBeUpToDate: false,
@@ -385,7 +385,7 @@ describe('github:repo:push', () => {
       client: mockOctokit,
       repoName: 'repository',
       logger: mockContext.logger,
-      defaultBranch: 'master',
+      defaultBranch: 'main',
       requireCodeOwnerReviews: false,
       requiredStatusCheckContexts: [],
       requireBranchesToBeUpToDate: true,
@@ -484,7 +484,7 @@ describe('github:repo:push', () => {
         client: mockOctokit,
         repoName: 'repository',
         logger: mockContext.logger,
-        defaultBranch: 'master',
+        defaultBranch: 'main',
         requireCodeOwnerReviews: false,
         requiredStatusCheckContexts: [],
         requireBranchesToBeUpToDate: true,
@@ -513,7 +513,7 @@ describe('github:repo:push', () => {
         client: mockOctokit,
         repoName: 'repository',
         logger: mockContext.logger,
-        defaultBranch: 'master',
+        defaultBranch: 'main',
         requireCodeOwnerReviews: false,
         requiredStatusCheckContexts: [],
         requireBranchesToBeUpToDate: true,
@@ -542,7 +542,7 @@ describe('github:repo:push', () => {
         client: mockOctokit,
         repoName: 'repository',
         logger: mockContext.logger,
-        defaultBranch: 'master',
+        defaultBranch: 'main',
         requireCodeOwnerReviews: false,
         requiredStatusCheckContexts: [],
         requireBranchesToBeUpToDate: true,