diff --git a/activities/documentation/index.md b/activities/documentation/index.md
index a5a6b15f5..e5bee6564 100644
--- a/activities/documentation/index.md
+++ b/activities/documentation/index.md
@@ -17,7 +17,7 @@ In order to always be able to access the most up to date information as well as
 About is the canonical source of truth for our organization.
 This means that the information on the [about.publiccode.net](https://about.publiccode.net/) website – a reflection of the `main` branch in the [`about` repository](https://github.com/publiccodenet/about) – takes precedence over any other information.
 
-We work according to [GitHub flow](https://docs.github.com/en/get-started/quickstart/github-flow), except for work that is versioned and deployed, in which case we use [a GitFlow branching model](https://datasift.github.io/gitflow/IntroducingGitFlow.html).
+We work according to [GitHub flow](https://docs.github.com/en/get-started/quickstart/github-flow), except for work that is versioned and deployed, in which case we use [a GitFlow branching model](https://web.archive.org/web/20231229171831/https://datasift.github.io/gitflow/IntroducingGitFlow.html).
 
 ## Content types
 
diff --git a/activities/documentation/merge-develop-into-main.md b/activities/documentation/merge-develop-into-main.md
index 3cf58b8c1..ea479d870 100644
--- a/activities/documentation/merge-develop-into-main.md
+++ b/activities/documentation/merge-develop-into-main.md
@@ -23,7 +23,7 @@ The purpose of reviewing these merges carefully is to make sure that we only pub
 5. Once review is complete, merge to main! :tada:
 6. If any changes were made to the release branch, make a pull request from main into develop. This ensures these changes will also be implemented in develop, keeping it up to date.
 
-Our publishing process is [based on GitFlow](https://datasift.github.io/gitflow/IntroducingGitFlow.html).
+Our publishing process is [based on GitFlow](https://web.archive.org/web/20231229171831/https://datasift.github.io/gitflow/IntroducingGitFlow.html).
 
 ```
 ## Review checklist template