diff --git a/Gemfile.lock b/Gemfile.lock
index 4444e9e..87d93cc 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -13,7 +13,7 @@ PATH
       diaspora_federation (= 0.3.0)
     diaspora_federation-test (0.3.0)
       diaspora_federation (= 0.3.0)
-      fabrication (~> 2.16)
+      fabrication (~> 2.29)
       uuid (~> 2.3, >= 2.3.8)
 
 GEM
@@ -52,7 +52,7 @@ GEM
     erubi (1.10.0)
     ethon (0.15.0)
       ffi (>= 1.15.0)
-    fabrication (2.27.0)
+    fabrication (2.29.0)
     faraday (2.3.0)
       faraday-net_http (~> 2.0)
       ruby2_keywords (>= 0.0.4)
diff --git a/diaspora_federation-test.gemspec b/diaspora_federation-test.gemspec
index 24a949d..ddb305b 100644
--- a/diaspora_federation-test.gemspec
+++ b/diaspora_federation-test.gemspec
@@ -25,6 +25,6 @@ Gem::Specification.new do |s|
   s.required_ruby_version = ">= 2.7"
 
   s.add_dependency "diaspora_federation", DiasporaFederation::VERSION
-  s.add_dependency "fabrication", "~> 2.16"
+  s.add_dependency "fabrication", "~> 2.29"
   s.add_dependency "uuid", "~> 2.3", ">= 2.3.8"
 end
diff --git a/lib/diaspora_federation/test/entity_generator.rb b/lib/diaspora_federation/test/entity_generator.rb
index 24a7e63..d118b52 100644
--- a/lib/diaspora_federation/test/entity_generator.rb
+++ b/lib/diaspora_federation/test/entity_generator.rb
@@ -9,7 +9,7 @@ module DiasporaFederation
       end
 
       def build_instance
-        self._instance = _klass.new(_attributes)
+        self._instance = resolved_class.new(_attributes)
       end
 
       def to_hash(attributes=[], _callbacks=[])