diff --git a/README.md b/README.md
index a4de5a5..956cc7e 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # MISP Taxonomies
 
-[![Build Status](https://travis-ci.org/MISP/misp-taxonomies.svg?branch=master)](https://travis-ci.org/MISP/misp-taxonomies)
+[![Build Status](https://travis-ci.org/MISP/misp-taxonomies.svg?branch=main)](https://travis-ci.org/MISP/misp-taxonomies)
 
 MISP Taxonomies is a set of common classification libraries to tag, classify and organise information. Taxonomy allows to express the same vocabulary among a distributed set of users and organisations.
 
@@ -197,7 +197,7 @@ The following taxonomy namespaces are reserved and used internally to MISP.
 
 # Documentation
 
-A documentation of the taxonomies is [generated automatically](https://github.com/MISP/misp-taxonomies/blob/master/tools/machinetag.py) from the taxonomies description and available in [PDF](https://www.misp.software/taxonomies.pdf) and [HTML](https://www.misp.software/taxonomies.html).
+A documentation of the taxonomies is [generated automatically](https://github.com/MISP/misp-taxonomies/blob/main/tools/machinetag.py) from the taxonomies description and available in [PDF](https://www.misp.software/taxonomies.pdf) and [HTML](https://www.misp.software/taxonomies.html).
 
 # How to contribute your taxonomy?
 
diff --git a/tools/gen_manifest.py b/tools/gen_manifest.py
index b328be5..a54fce9 100755
--- a/tools/gen_manifest.py
+++ b/tools/gen_manifest.py
@@ -23,7 +23,7 @@ def generateManifest(taxonomies):
     manifest = {}
     manifest['taxonomies'] = []
     manifest['path'] = 'machinetag.json'
-    manifest['url'] = 'https://raw.githubusercontent.com/MISP/misp-taxonomies/master/'
+    manifest['url'] = 'https://raw.githubusercontent.com/MISP/misp-taxonomies/main/'
     manifest['description'] = 'Manifest file of MISP taxonomies available.'
     manifest['license'] = 'CC-0'
     now = datetime.now()
diff --git a/tools/generator/misp-galaxy.py b/tools/generator/misp-galaxy.py
index 3a5f652..130c6b1 100644
--- a/tools/generator/misp-galaxy.py
+++ b/tools/generator/misp-galaxy.py
@@ -2,7 +2,7 @@ import json
 import requests
 
 debug = False
-galaxy_url = 'https://raw.githubusercontent.com/MISP/misp-galaxy/master/clusters/'
+galaxy_url = 'https://raw.githubusercontent.com/MISP/misp-galaxy/main/clusters/'
 elements = ['tools.json', 'threat-actors.json']
 # elements = ['threat-actor-tools.json']
 
diff --git a/tools/machinetag.py b/tools/machinetag.py
index 57665ab..31eed16 100755
--- a/tools/machinetag.py
+++ b/tools/machinetag.py
@@ -88,7 +88,7 @@ def asciidoc(content=False, adoc=doc, t='title', toplevel=False):
         content = '=== ' + content
     elif t == 'namespace':
         content = '== ' + content + '\n'
-        content = "{}\n{}{} {}{}{} {}".format(content, 'NOTE: ', namespace, 'namespace available in JSON format at https://github.com/MISP/misp-taxonomies/blob/master/',
+        content = "{}\n{}{} {}{}{} {}".format(content, 'NOTE: ', namespace, 'namespace available in JSON format at https://github.com/MISP/misp-taxonomies/blob/main/',
                                                 namespace, '/machinetag.json[*this location*]. The JSON format can be freely reused in your application',
                                                 'or automatically enabled in https://www.github.com/MISP/MISP[MISP] taxonomy.')
     elif t == 'description' and toplevel is True: