diff --git a/lib/templates/Puppetfile.erb b/lib/templates/Puppetfile.erb
index 2ba8cf153..83b0ea80e 100644
--- a/lib/templates/Puppetfile.erb
+++ b/lib/templates/Puppetfile.erb
@@ -9,6 +9,7 @@
 forge "https://forgeapi.puppetlabs.com"
 
 mod 'puppetlabs-stdlib', '4.24.0'  # stdlib enables parsejson() in manifests and other useful functions
+mod 'puppetlabs-apt', '7.4.0'  # pin apt to 7.4.0 as current version is incompatible with our base boxes
 mod 'SecGen-secgen_functions', :path => '<%= SECGEN_FUNCTIONS_PUPPET_DIR %>'
 
 <% @currently_processing_system.module_selections.each do |selected_module| -%>