diff --git a/docs/docs/user/changelog.md b/docs/docs/user/changelog.md
index 4d6909f1d..ac88d6bf6 100644
--- a/docs/docs/user/changelog.md
+++ b/docs/docs/user/changelog.md
@@ -1,4 +1,22 @@
 # Changelog
+## [6.1.0](https://github.com/bakdata/kpops/releases/tag/6.1.0) - Release Date: [2024-07-09]
+
+### 🚀 Features
+
+- Add image tag field to streams-bootstrap app values - [#499](https://github.com/bakdata/kpops/pull/499)
+
+- Delete ignored keys from diff - [#510](https://github.com/bakdata/kpops/pull/510)
+
+
+### 🏭 Refactor
+
+- Improve dataclass instance check - [#507](https://github.com/bakdata/kpops/pull/507)
+
+
+
+
+
+
 ## [6.0.2](https://github.com/bakdata/kpops/releases/tag/6.0.2) - Release Date: [2024-07-04]
 
 ### 📝 Documentation
diff --git a/kpops/components/base_components/base_defaults_component.py b/kpops/components/base_components/base_defaults_component.py
index af8907c56..6951b502d 100644
--- a/kpops/components/base_components/base_defaults_component.py
+++ b/kpops/components/base_components/base_defaults_component.py
@@ -4,7 +4,7 @@
 import logging
 from abc import ABC
 from collections.abc import Hashable, Sequence
-from dataclasses import asdict, is_dataclass
+from dataclasses import asdict
 from functools import cached_property
 from pathlib import Path
 from typing import Any, TypeVar
@@ -22,6 +22,7 @@
 from kpops.config import KpopsConfig, get_config
 from kpops.const.file_type import KpopsFileType
 from kpops.utils import cached_classproperty
+from kpops.utils.dataclasses import is_dataclass_instance
 from kpops.utils.dict_ops import (
     generate_substitution,
     update_nested,
@@ -165,7 +166,7 @@ def extend_with_defaults(cls, **kwargs: Any) -> dict[str, Any]:
         for k, v in kwargs.items():
             if isinstance(v, pydantic.BaseModel):
                 kwargs[k] = v.model_dump(exclude_unset=True)
-            elif is_dataclass(v):
+            elif is_dataclass_instance(v):
                 kwargs[k] = asdict(v)
 
         defaults_file_paths_ = get_defaults_file_paths(
diff --git a/kpops/utils/dataclasses.py b/kpops/utils/dataclasses.py
new file mode 100644
index 000000000..16db70d94
--- /dev/null
+++ b/kpops/utils/dataclasses.py
@@ -0,0 +1,5 @@
+from dataclasses import is_dataclass
+
+
+def is_dataclass_instance(obj: object) -> bool:
+    return is_dataclass(obj) and not isinstance(obj, type)
diff --git a/kpops/utils/dict_differ.py b/kpops/utils/dict_differ.py
index 1c3dbdeb7..9f1ca97e2 100644
--- a/kpops/utils/dict_differ.py
+++ b/kpops/utils/dict_differ.py
@@ -1,10 +1,10 @@
 from __future__ import annotations
 
-from collections.abc import Mapping
+from collections.abc import Mapping, MutableMapping
 from dataclasses import dataclass
 from difflib import Differ
 from enum import Enum
-from typing import TYPE_CHECKING, Generic, TypeVar
+from typing import TYPE_CHECKING, Any, Generic, TypeVar
 
 import typer
 import yaml
@@ -79,8 +79,28 @@ def __find_changed_key(key_1: list[str] | str, key_2: str = "") -> str:
         return f"{key_1}.{key_2}"
 
 
-def render_diff(d1: Mapping, d2: Mapping, ignore: set[str] | None = None) -> str | None:
-    differences = list(diff(d1, d2, ignore=ignore))
+def render_diff(
+    d1: MutableMapping[str, Any],
+    d2: MutableMapping[str, Any],
+    ignore: set[str] | None = None,
+) -> str | None:
+    def del_ignored_keys(d: MutableMapping[str, Any]) -> None:
+        """Delete key to be ignored, dictionary is modified in-place."""
+        if ignore:
+            for i in ignore:
+                key_path = i.split(".")
+                nested = d
+                try:
+                    for key in key_path[:-1]:
+                        nested = nested[key]
+                    del nested[key_path[-1]]
+                except KeyError:
+                    continue
+
+    del_ignored_keys(d1)
+    del_ignored_keys(d2)
+
+    differences = list(diff(d1, d2))
     if not differences:
         return None
 
diff --git a/pyproject.toml b/pyproject.toml
index cd831c71b..1dac57a50 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "kpops"
-version = "6.0.2"
+version = "6.1.0"
 description = "KPOps is a tool to deploy Kafka pipelines to Kubernetes"
 authors = ["bakdata <opensource@bakdata.com>"]
 license = "MIT"
diff --git a/tests/utils/test_diff.py b/tests/utils/test_diff.py
index f2ffeac88..8a6e5f2b7 100644
--- a/tests/utils/test_diff.py
+++ b/tests/utils/test_diff.py
@@ -25,7 +25,6 @@
             {"a": 1, "b": 2, "c": 3},
             {"a": 2, "d": 1},
             {"a"},
-            "  a: 1\n"
             "\x1b[32m+ d: 1\n"
             "\x1b[0m\x1b[31m- b: 2\n"
             "\x1b[0m\x1b[31m- c: 3\n"
@@ -36,7 +35,6 @@
             {"a": {"a": 9, "b": 8}, "d": 1},
             {"a.a"},
             "  a:\n"
-            "    a: 1\n"
             "\x1b[31m-   b: 2\n"
             "\x1b[0m\x1b[33m?      ^\n"
             "\x1b[0m\x1b[32m+   b: 8\n"