diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4f2e5391..68e0dd35 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,12 +11,28 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changes
 
+### Deprecated
+
+### Removed
+
+### Fixed
+
+### Security
+
+## [0.19.4] - 2024-02-15
+
+### Added
+
+### Changes
+
 - update cruft and minor dependencies
 
 ### Deprecated
 
 ### Removed
 
+- date-time format validation for mapping model generation
+
 ### Fixed
 
 ### Security
diff --git a/mex/common/types/timestamp.py b/mex/common/types/timestamp.py
index 520ea4a5..b5b85eb1 100644
--- a/mex/common/types/timestamp.py
+++ b/mex/common/types/timestamp.py
@@ -165,7 +165,6 @@ def __get_pydantic_json_schema__(
         """Modify the schema to add the class name as title and examples."""
         json_schema = handler(core_schema_)
         json_schema["title"] = cls.__name__
-        json_schema["format"] = "date-time"
         json_schema["examples"] = [
             "2011",
             "2019-03",
diff --git a/poetry.lock b/poetry.lock
index 34b80454..a3b114f1 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -67,33 +67,33 @@ files = [
 
 [[package]]
 name = "black"
-version = "24.1.1"
+version = "24.2.0"
 description = "The uncompromising code formatter."
 optional = false
 python-versions = ">=3.8"
 files = [
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-    {file = "black-24.1.1-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:1a95915c98d6e32ca43809d46d932e2abc5f1f7d582ffbe65a5b4d1588af7445"},
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+    {file = "black-24.2.0-cp312-cp312-macosx_10_9_x86_64.whl", hash = "sha256:d84f29eb3ee44859052073b7636533ec995bd0f64e2fb43aeceefc70090e752b"},
+    {file = "black-24.2.0-cp312-cp312-macosx_11_0_arm64.whl", hash = "sha256:1e08fb9a15c914b81dd734ddd7fb10513016e5ce7e6704bdd5e1251ceee51ac9"},
+    {file = "black-24.2.0-cp312-cp312-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:810d445ae6069ce64030c78ff6127cd9cd178a9ac3361435708b907d8a04c693"},
+    {file = "black-24.2.0-cp312-cp312-win_amd64.whl", hash = "sha256:ba15742a13de85e9b8f3239c8f807723991fbfae24bad92d34a2b12e81904982"},
+    {file = "black-24.2.0-cp38-cp38-macosx_10_9_x86_64.whl", hash = "sha256:7e53a8c630f71db01b28cd9602a1ada68c937cbf2c333e6ed041390d6968faf4"},
+    {file = "black-24.2.0-cp38-cp38-macosx_11_0_arm64.whl", hash = "sha256:93601c2deb321b4bad8f95df408e3fb3943d85012dddb6121336b8e24a0d1218"},
+    {file = "black-24.2.0-cp38-cp38-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:a0057f800de6acc4407fe75bb147b0c2b5cbb7c3ed110d3e5999cd01184d53b0"},
+    {file = "black-24.2.0-cp38-cp38-win_amd64.whl", hash = "sha256:faf2ee02e6612577ba0181f4347bcbcf591eb122f7841ae5ba233d12c39dcb4d"},
+    {file = "black-24.2.0-cp39-cp39-macosx_10_9_x86_64.whl", hash = "sha256:057c3dc602eaa6fdc451069bd027a1b2635028b575a6c3acfd63193ced20d9c8"},
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+    {file = "black-24.2.0-cp39-cp39-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:ca610d29415ee1a30a3f30fab7a8f4144e9d34c89a235d81292a1edb2b55f540"},
+    {file = "black-24.2.0-cp39-cp39-win_amd64.whl", hash = "sha256:4dd76e9468d5536abd40ffbc7a247f83b2324f0c050556d9c371c2b9a9a95e31"},
+    {file = "black-24.2.0-py3-none-any.whl", hash = "sha256:e8a6ae970537e67830776488bca52000eaa37fa63b9988e8c487458d9cd5ace6"},
+    {file = "black-24.2.0.tar.gz", hash = "sha256:bce4f25c27c3435e4dace4815bcb2008b87e167e3bf4ee47ccdc5ce906eb4894"},
 ]
 
 [package.dependencies]
@@ -1478,13 +1478,13 @@ files = [
 
 [[package]]
 name = "tzdata"
-version = "2023.4"
+version = "2024.1"
 description = "Provider of IANA time zone data"
 optional = false
 python-versions = ">=2"
 files = [
-    {file = "tzdata-2023.4-py2.py3-none-any.whl", hash = "sha256:aa3ace4329eeacda5b7beb7ea08ece826c28d761cda36e747cfbf97996d39bf3"},
-    {file = "tzdata-2023.4.tar.gz", hash = "sha256:dd54c94f294765522c77399649b4fefd95522479a664a0cec87f41bebc6148c9"},
+    {file = "tzdata-2024.1-py2.py3-none-any.whl", hash = "sha256:9068bc196136463f5245e51efda838afa15aaeca9903f49050dfa2679db4d252"},
+    {file = "tzdata-2024.1.tar.gz", hash = "sha256:2674120f8d891909751c38abcdfd386ac0a5a1127954fbc332af6b5ceae07efd"},
 ]
 
 [[package]]
diff --git a/pyproject.toml b/pyproject.toml
index 423f946a..0bac2552 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "mex-common"
-version = "0.19.3"
+version = "0.19.4"
 description = "Common library for MEx python projects."
 authors = ["RKI MEx Team <mex@rki.de>"]
 readme = "README.md"
diff --git a/tests/models/test_model_schemas.py b/tests/models/test_model_schemas.py
index 8f5560fc..3dc61c2f 100644
--- a/tests/models/test_model_schemas.py
+++ b/tests/models/test_model_schemas.py
@@ -10,6 +10,7 @@
 from mex.common.models import EXTRACTED_MODEL_CLASSES_BY_NAME
 from mex.common.transform import dromedary_to_kebab
 from mex.common.types.identifier import MEX_ID_PATTERN
+from mex.common.types.timestamp import TIMESTAMP_REGEX
 
 SPECIFIED_SCHEMA_PATH = files("mex.model").joinpath("entities")
 
@@ -121,7 +122,10 @@ def prepare_field(field: str, obj: list[Any] | dict[str, Any]) -> None:
     # ignore differences between dates and datetimes
     # (we only have `Timestamp` as a date-time implementation, but no type for `date`,
     # but we might/should add that in the future)
-    if obj.get("format") in ("date", "date-time"):
+    if (
+        obj.get("format") in ("date", "date-time")
+        or obj.get("pattern") == TIMESTAMP_REGEX
+    ):
         obj.pop("examples", None)
         obj.pop("pattern", None)
         obj["format"] = "date-time"