diff --git a/app/common/__init__.py b/app/common/__init__.py
index 7d9f7f65..97e30c68 100644
--- a/app/common/__init__.py
+++ b/app/common/__init__.py
@@ -1,2 +1 @@
 from common.singleton import Singleton
-from common.singleton_abstract import SingletonABCMeta
diff --git a/app/pipeline/chat/simple_chat_pipeline.py b/app/pipeline/chat/simple_chat_pipeline.py
index e556aad2..b1e58896 100644
--- a/app/pipeline/chat/simple_chat_pipeline.py
+++ b/app/pipeline/chat/simple_chat_pipeline.py
@@ -11,7 +11,6 @@
 class SimpleChatPipeline(Pipeline):
     """A simple chat pipeline that uses our custom langchain chat model for our own request handler"""
 
-    _is_abstract: bool = False
     llm: IrisLangchainChatModel
     pipeline: Runnable
 
diff --git a/app/pipeline/chat/tutor_chat_pipeline.py b/app/pipeline/chat/tutor_chat_pipeline.py
index 9e82e2d5..3390b81d 100644
--- a/app/pipeline/chat/tutor_chat_pipeline.py
+++ b/app/pipeline/chat/tutor_chat_pipeline.py
@@ -16,7 +16,6 @@
 class TutorChatPipeline(Pipeline):
     """Tutor chat pipeline that answers exercises related questions from students."""
 
-    _is_abstract: bool = False
     llm: IrisLangchainChatModel
     pipeline: Runnable
 
diff --git a/app/pipeline/pipeline.py b/app/pipeline/pipeline.py
index 2a10672a..e7c3e346 100644
--- a/app/pipeline/pipeline.py
+++ b/app/pipeline/pipeline.py
@@ -1,12 +1,9 @@
-from abc import abstractmethod
+from abc import abstractmethod, ABCMeta
 
-from common import SingletonABCMeta
 
-
-class Pipeline(metaclass=SingletonABCMeta):
+class Pipeline(metaclass=ABCMeta):
     """Abstract class for all pipelines"""
 
-    _is_abstract = True
     implementation_id: str
 
     def __init__(self, implementation_id=None):
diff --git a/app/pipeline/shared/summary_pipeline.py b/app/pipeline/shared/summary_pipeline.py
index c020f667..c922c170 100644
--- a/app/pipeline/shared/summary_pipeline.py
+++ b/app/pipeline/shared/summary_pipeline.py
@@ -15,7 +15,6 @@
 class SummaryPipeline(Pipeline):
     """A generic summary pipeline that can be used to summarize any text"""
 
-    _is_abstract: bool = False
     _cache: Dict = {}
     llm: IrisLangchainChatModel
     pipeline: Runnable