diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 7fc58758e..e693396cd 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -100,5 +100,5 @@ your real name, saying:
 Finally, you will need to submit your patches so that they can be reviewed
 and potentially merged into the main Catima repository. The preferred
 way to do this is to submit a Pull Request to the Catima project.
-Changes need to apply cleanly onto the master branch and pass all
+Changes need to apply cleanly onto the main branch and pass all
 unit tests and produce no errors during static analysis.
diff --git a/app/src/main/java/protect/card_locker/AboutActivity.java b/app/src/main/java/protect/card_locker/AboutActivity.java
index 867b4c6bb..f7adc5dac 100644
--- a/app/src/main/java/protect/card_locker/AboutActivity.java
+++ b/app/src/main/java/protect/card_locker/AboutActivity.java
@@ -34,7 +34,7 @@ public class AboutActivity extends CatimaAppCompatActivity {
 
         binding.versionHistory.setTag("https://catima.app/changelog/");
         binding.translate.setTag("https://hosted.weblate.org/engage/catima/");
-        binding.license.setTag("https://github.com/CatimaLoyalty/Android/blob/master/LICENSE");
+        binding.license.setTag("https://github.com/CatimaLoyalty/Android/blob/main/LICENSE");
         binding.repo.setTag("https://github.com/CatimaLoyalty/Android/");
         binding.privacy.setTag("https://catima.app/privacy-policy/");
         binding.reportError.setTag("https://github.com/CatimaLoyalty/Android/issues");
diff --git a/docs/README.md b/docs/README.md
index 7a8c215a4..de6f5db54 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -18,7 +18,7 @@ Copylefted libre software (GPLv3+) card management app.
 <a href="https://play.google.com/store/apps/details?id=me.hackerchick.catima" target="_blank">
 <img src="https://play.google.com/intl/en_us/badges/images/generic/en-play-badge.png" alt="Get it on Google Play" height="90"/></a>
 
-![Logo](https://github.com/TheLastProject/Catima/raw/master/app/src/main/ic_launcher-playstore.png)
+![Logo](https://github.com/TheLastProject/Catima/raw/main/app/src/main/ic_launcher-playstore.png)
 
 *Logo by [Rose (TangentFoxy)](http://github.com/TangentFoxy)*
 
@@ -42,14 +42,14 @@ Supported barcodes:
 
 # Screenshots
 
-[<img src="https://github.com/TheLastProject/Catima/raw/master/fastlane/metadata/android/en-US/images/phoneScreenshots/screenshot-01.png" width=250>](https://github.com/TheLastProject/Catima/raw/master/fastlane/metadata/android/en-US/images/phoneScreenshots/screenshot-01.png)
-[<img src="https://github.com/TheLastProject/Catima/raw/master/fastlane/metadata/android/en-US/images/phoneScreenshots/screenshot-02.png" width=250>](https://github.com/TheLastProject/Catima/raw/master/fastlane/metadata/android/en-US/images/phoneScreenshots/screenshot-02.png)
-[<img src="https://github.com/TheLastProject/Catima/raw/master/fastlane/metadata/android/en-US/images/phoneScreenshots/screenshot-03.png" width=250>](https://github.com/TheLastProject/Catima/raw/master/fastlane/metadata/android/en-US/images/phoneScreenshots/screenshot-03.png)
-[<img src="https://github.com/TheLastProject/Catima/raw/master/fastlane/metadata/android/en-US/images/phoneScreenshots/screenshot-04.png" width=250>](https://github.com/TheLastProject/Catima/raw/master/fastlane/metadata/android/en-US/images/phoneScreenshots/screenshot-04.png)
-[<img src="https://github.com/TheLastProject/Catima/raw/master/fastlane/metadata/android/en-US/images/phoneScreenshots/screenshot-05.png" width=250>](https://github.com/TheLastProject/Catima/raw/master/fastlane/metadata/android/en-US/images/phoneScreenshots/screenshot-05.png)
-[<img src="https://github.com/TheLastProject/Catima/raw/master/fastlane/metadata/android/en-US/images/phoneScreenshots/screenshot-06.png" width=250>](https://github.com/TheLastProject/Catima/raw/master/fastlane/metadata/android/en-US/images/phoneScreenshots/screenshot-06.png)
-[<img src="https://github.com/TheLastProject/Catima/raw/master/fastlane/metadata/android/en-US/images/phoneScreenshots/screenshot-07.png" width=250>](https://github.com/TheLastProject/Catima/raw/master/fastlane/metadata/android/en-US/images/phoneScreenshots/screenshot-07.png)
-[<img src="https://github.com/TheLastProject/Catima/raw/master/fastlane/metadata/android/en-US/images/phoneScreenshots/screenshot-08.png" width=250>](https://github.com/TheLastProject/Catima/raw/master/fastlane/metadata/android/en-US/images/phoneScreenshots/screenshot-08.png)
+[<img src="https://github.com/TheLastProject/Catima/raw/main/fastlane/metadata/android/en-US/images/phoneScreenshots/screenshot-01.png" width=250>](https://github.com/TheLastProject/Catima/raw/main/fastlane/metadata/android/en-US/images/phoneScreenshots/screenshot-01.png)
+[<img src="https://github.com/TheLastProject/Catima/raw/main/fastlane/metadata/android/en-US/images/phoneScreenshots/screenshot-02.png" width=250>](https://github.com/TheLastProject/Catima/raw/main/fastlane/metadata/android/en-US/images/phoneScreenshots/screenshot-02.png)
+[<img src="https://github.com/TheLastProject/Catima/raw/main/fastlane/metadata/android/en-US/images/phoneScreenshots/screenshot-03.png" width=250>](https://github.com/TheLastProject/Catima/raw/main/fastlane/metadata/android/en-US/images/phoneScreenshots/screenshot-03.png)
+[<img src="https://github.com/TheLastProject/Catima/raw/main/fastlane/metadata/android/en-US/images/phoneScreenshots/screenshot-04.png" width=250>](https://github.com/TheLastProject/Catima/raw/main/fastlane/metadata/android/en-US/images/phoneScreenshots/screenshot-04.png)
+[<img src="https://github.com/TheLastProject/Catima/raw/main/fastlane/metadata/android/en-US/images/phoneScreenshots/screenshot-05.png" width=250>](https://github.com/TheLastProject/Catima/raw/main/fastlane/metadata/android/en-US/images/phoneScreenshots/screenshot-05.png)
+[<img src="https://github.com/TheLastProject/Catima/raw/main/fastlane/metadata/android/en-US/images/phoneScreenshots/screenshot-06.png" width=250>](https://github.com/TheLastProject/Catima/raw/main/fastlane/metadata/android/en-US/images/phoneScreenshots/screenshot-06.png)
+[<img src="https://github.com/TheLastProject/Catima/raw/main/fastlane/metadata/android/en-US/images/phoneScreenshots/screenshot-07.png" width=250>](https://github.com/TheLastProject/Catima/raw/main/fastlane/metadata/android/en-US/images/phoneScreenshots/screenshot-07.png)
+[<img src="https://github.com/TheLastProject/Catima/raw/main/fastlane/metadata/android/en-US/images/phoneScreenshots/screenshot-08.png" width=250>](https://github.com/TheLastProject/Catima/raw/main/fastlane/metadata/android/en-US/images/phoneScreenshots/screenshot-08.png)
 
 # Moving data from other apps