diff --git a/contrib/gitian-descriptors/gitian-linux.yml b/contrib/gitian-descriptors/gitian-linux.yml
index 4a2a66ba3ae75..b624707902deb 100755
--- a/contrib/gitian-descriptors/gitian-linux.yml
+++ b/contrib/gitian-descriptors/gitian-linux.yml
@@ -27,6 +27,7 @@ packages:
 - "bsdmainutils"
 - "ca-certificates"
 - "python"
+- "python3"
 remotes:
 - "url": "https://github.com/absolute-community/absolute.git"
   "dir": "absolute"
diff --git a/contrib/gitian-descriptors/gitian-osx.yml b/contrib/gitian-descriptors/gitian-osx.yml
index 6161d2b1908a0..d39c196987371 100644
--- a/contrib/gitian-descriptors/gitian-osx.yml
+++ b/contrib/gitian-descriptors/gitian-osx.yml
@@ -25,7 +25,9 @@ packages:
 - "libbz2-dev"
 - "python"
 - "python-dev"
-- "python-setuptools"
+- "python3"
+- "python3-dev"
+- "python3-setuptools"
 - "fonts-tuffy"
 remotes:
 - "url": "https://github.com/absolute-community/absolute.git"
diff --git a/contrib/gitian-descriptors/gitian-win.yml b/contrib/gitian-descriptors/gitian-win.yml
index 2eece37e6af51..8cd33c0d56af6 100755
--- a/contrib/gitian-descriptors/gitian-win.yml
+++ b/contrib/gitian-descriptors/gitian-win.yml
@@ -21,6 +21,7 @@ packages:
 - "zip"
 - "ca-certificates"
 - "python"
+- "python3"
 remotes:
 - "url": "https://github.com/absolute-community/absolute.git"
   "dir": "absolute"