diff --git a/README.md b/README.md
index b171d33de..ff860827f 100644
--- a/README.md
+++ b/README.md
@@ -85,6 +85,10 @@ Made with [contrib.rocks](https://contrib.rocks).
 
 ### bioimageio.spec Python package
 
+#### bioimageio.spec 0.5.0post1
+
+* fix `_internal.io_utils.identify_bioimageio_yaml_file()`
+
 #### bioimageio.spec 0.5.0
 
 * new description formats: [generic 0.3, application 0.3, collection 0.3, dataset 0.3, notebook 0.3](generic-030--application-030--collection-030--dataset-030--notebook-030) and [model 0.5](model-050).
diff --git a/bioimageio/spec/VERSION b/bioimageio/spec/VERSION
index 8fd887d4d..65ffcdda8 100644
--- a/bioimageio/spec/VERSION
+++ b/bioimageio/spec/VERSION
@@ -1,3 +1,3 @@
 {
-    "version": "0.5.0"
+    "version": "0.5.0post1"
 }
diff --git a/bioimageio/spec/_internal/io_utils.py b/bioimageio/spec/_internal/io_utils.py
index 18d7cd9da..63e8e1940 100644
--- a/bioimageio/spec/_internal/io_utils.py
+++ b/bioimageio/spec/_internal/io_utils.py
@@ -13,6 +13,7 @@
 from typing_extensions import Unpack
 
 from .io import (
+    ALL_BIOIMAGEIO_YAML_NAMES,
     BIOIMAGEIO_YAML,
     BioimageioYamlContent,
     FileDescr,
@@ -92,15 +93,15 @@ def open_bioimageio_yaml(
 
 def identify_bioimageio_yaml_file(file_names: Iterable[FileName]) -> FileName:
     file_names = sorted(file_names)
-    for bioimageio_name in (BIOIMAGEIO_YAML,) + ALTERNATIVE_BIOIMAGEIO_YAML_NAMES:
+    for bioimageio_name in ALL_BIOIMAGEIO_YAML_NAMES:
         for fname in file_names:
-            if fname == bioimageio_name or fname.endswith(f".{fname}"):
+            if fname == bioimageio_name or fname.endswith(f".{bioimageio_name}"):
                 return fname
 
     raise ValueError(
         f"No {BIOIMAGEIO_YAML} found in {file_names}. (Looking for '{BIOIMAGEIO_YAML}'"
         + " or or any of the alterntive file names:"
-        + f" {ALTERNATIVE_BIOIMAGEIO_YAML_NAMES},of any file with an extension of"
+        + f" {ALTERNATIVE_BIOIMAGEIO_YAML_NAMES}, or any file with an extension of"
         + f"  those, e.g. 'anything.{BIOIMAGEIO_YAML}')."
     )
 
diff --git a/conda-recipe/meta.yaml b/conda-recipe/meta.yaml
index 9b4f6a6b2..303b45ce9 100644
--- a/conda-recipe/meta.yaml
+++ b/conda-recipe/meta.yaml
@@ -35,7 +35,6 @@ test:
     {% for dep in setup_py_data['extras_require']['dev'] %}
     - {{ dep.replace('torch', 'pytorch').lower() }}
     {% endfor %}
-    - pytest-xdist[psutil]  # somehow not installed from setup_py_data
   commands:
     - pytest -n auto --capture=no
 
diff --git a/setup.py b/setup.py
index 8fb54e704..f7a8608e8 100644
--- a/setup.py
+++ b/setup.py
@@ -37,7 +37,7 @@
         "packaging>=17.0",
         "pooch",
         "pydantic-settings",
-        "pydantic[email]>=2.6.3",
+        "pydantic>=2.6.3",
         "python-dateutil",
         "ruyaml",
         "tqdm",
@@ -53,8 +53,9 @@
             "lxml",
             "pdoc",
             "pre-commit",
+            "psutil",  # parallel pytest with '-n auto'
             "pyright",
-            "pytest-xdist[psutil]",  # parallel pytest with 'pytest -n auto'
+            "pytest-xdist",  # parallel pytest
             "pytest",
             "ruff",  # check line length in cases black cannot fix it
         ]