diff --git a/poetry.lock b/poetry.lock
index 52ef1ebf..81dc78fb 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 2.1.4 and should not be changed by hand.
+# This file is automatically @generated by Poetry 2.1.1 and should not be changed by hand.
 
 [[package]]
 name = "annotated-types"
@@ -376,7 +376,7 @@ description = "Cross-platform colored terminal text."
 optional = false
 python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,!=3.5.*,!=3.6.*,>=2.7"
 groups = ["main"]
-markers = "sys_platform == \"win32\" or platform_system == \"Windows\""
+markers = "platform_system == \"Windows\" or sys_platform == \"win32\""
 files = [
     {file = "colorama-0.4.6-py2.py3-none-any.whl", hash = "sha256:4f1d9991f5acc0ca119f9d443620b77f9d6b33703e51011c16baf57afb285fc6"},
     {file = "colorama-0.4.6.tar.gz", hash = "sha256:08695f5cb7ed6e0531a20572697297273c47b8cae5a63ffc6d6ed5c201be6e44"},
@@ -1275,14 +1275,14 @@ dev = ["argcomplete", "attrs (>=19.2)", "hypothesis (>=3.56)", "mock", "requests
 
 [[package]]
 name = "pytest-nhsd-apim"
-version = "5.0.3"
+version = "5.0.4"
 description = "Pytest plugin accessing NHSDigital's APIM proxies"
 optional = false
 python-versions = "<4.0,>=3.8"
 groups = ["main"]
 files = [
-    {file = "pytest_nhsd_apim-5.0.3-py3-none-any.whl", hash = "sha256:1aa230a207fec792ae77959fdb0e0950daa9608a099e0033d00d164c7e18862f"},
-    {file = "pytest_nhsd_apim-5.0.3.tar.gz", hash = "sha256:9fe29e2088194da994b1a506ebf5d0883030ec04fc7423e13f254667654b444e"},
+    {file = "pytest_nhsd_apim-5.0.4-py3-none-any.whl", hash = "sha256:04a17d90ec85958cb9823db29a798a42ab8cfd37c3c36379294e0eb0a60e0815"},
+    {file = "pytest_nhsd_apim-5.0.4.tar.gz", hash = "sha256:9b8d1c2d6fe69dcffd148fc3102e43bf0be2b39c6db950f7ae82711f3b58bfbc"},
 ]
 
 [package.dependencies]
@@ -1807,4 +1807,4 @@ test = ["pytest (>=3.0.0)"]
 [metadata]
 lock-version = "2.1"
 python-versions = "^3.13"
-content-hash = "d511ad26320849a1bab1eed1a91ec09c1afdef3411db94ee0c8c8b4eeed01505"
+content-hash = "b4d2bb401b93ecb7370019e1dcf317c045defaab9cd86958cd119a57671cb1e7"
diff --git a/pyproject.toml b/pyproject.toml
index 6bce7a96..9cad11d8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -13,7 +13,7 @@ build-backend = "poetry.core.masonry.api"
 
 [tool.poetry.dependencies]
 python = "^3.13"
-pytest-nhsd-apim = "^5.0.0"
+pytest-nhsd-apim = "^5.0.4"
 pytest = "^8.4.1"
 nhs-number-generator = {git = "https://github.com/Iain-S/nhs_number_generator.git"}
 flake8 = "^7.3.0"