add hardcoded

.github/scripts/find_gem_version_bounds.rb

@@ -24,6 +24,7 @@ def initialize(directory: 'gemfiles/', contrib_dir: 'lib/datadog/tracing/contrib
   def process
     parse_gemfiles
     process_integrations
+    include_hardcoded_versions
     write_output
   end
 
@@ -111,6 +112,24 @@ def process_integrations
     end
   end
 
+  def include_hardcoded_versions
+      # `httpx` is maintained externally
+    @integration_json_mapping['httpx'] = [
+      '0.11', # Min version Ruby
+      '0.11', # Max version Ruby
+      nil,     # Min version JRuby
+      nil      # Max version JRuby
+    ]
+
+    # `makara` is part of `activerecord`
+    @integration_json_mapping['makara'] = [
+      '0.3.5', # Min version Ruby
+      '0.3.5', # Max version Ruby
+      nil,     # Min version JRuby
+      nil      # Max version JRuby
+    ]
+  end
+
   def resolve_integration_name(integration)
     mod_name = SPECIAL_CASES[integration] || integration.split('_').map(&:capitalize).join
     module_name = "Datadog::Tracing::Contrib::#{mod_name}"