diff --git a/poetry.lock b/poetry.lock
index cfdb3b6..cde0bff 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -62,13 +62,13 @@ whitenoise = ">=5.2.0,<6.0.0"
 
 [[package]]
 name = "apis-core-rdf"
-version = "0.31.0"
+version = "0.31.1"
 description = "Base package for the APIS framework"
 optional = false
 python-versions = "<4.0,>=3.11"
 files = [
-    {file = "apis_core_rdf-0.31.0-py3-none-any.whl", hash = "sha256:12d35a7dc9d490ce2c81df3c3fc9bfce64fd62e013175b964ce850eb745815db"},
-    {file = "apis_core_rdf-0.31.0.tar.gz", hash = "sha256:a3d92eabe3b6255e435406ff825b4bce620eefed338ff83928896f4d7272d4f2"},
+    {file = "apis_core_rdf-0.31.1-py3-none-any.whl", hash = "sha256:b0a473788eb2ec44604eb0679de4c4e9c505373b6f74d23632a766cae5209070"},
+    {file = "apis_core_rdf-0.31.1.tar.gz", hash = "sha256:67b34bfe62c7a652099d886a10f513bba4335938e5e3dc476d41442669a6d3e0"},
 ]
 
 [package.dependencies]
@@ -3688,4 +3688,4 @@ type = ["pytest-mypy"]
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.11"
-content-hash = "49bcf13eca7df3cb3127a871d9b368de8f0a0443e9260f98b369434ad3d83219"
+content-hash = "fcf603a29d3bfabf6bcccc17b05a83091df389e52cfcf4c13b95f825d12375a9"
diff --git a/pyproject.toml b/pyproject.toml
index 62dc129..e6b6497 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -10,7 +10,7 @@ packages = [{include = "apis_ontology"}]
 [tool.poetry.dependencies]
 python = "^3.11"
 psycopg2 = "^2.9"
-apis-core-rdf = "0.31.0"
+apis-core-rdf = "0.31.1"
 apis-acdhch-default-settings = "1.5.0"
 django-acdhch-functions = "^0.1.3"
 django-extensions = "^3.1.3"