diff --git a/README.md b/README.md
index bd4e0b2..783c0b2 100644
--- a/README.md
+++ b/README.md
@@ -158,6 +158,7 @@ Report issues for this extension in the [ocds-extensions repository](https://git
 ### 2025-02-11
 
 * Add 'eu-vehicles' code to the `+classificationScheme.csv` codelist patch.
+* Add a `+partyRole.csv` codelist patch, with 'procurementServiceProvider' and 'eSender' codes.
 
 ### 2025-02-04
 
diff --git a/codelists/+partyRole.csv b/codelists/+partyRole.csv
new file mode 100644
index 0000000..5a779ad
--- /dev/null
+++ b/codelists/+partyRole.csv
@@ -0,0 +1,3 @@
+Code,Title,Description
+procurementServiceProvider,Procurement service provider,An organization that provides ancillary procurement services to buyers.
+eSender,TED eSender,An organization that provides data transfer services to buyers.
diff --git a/extension.json b/extension.json
index 4b1f2c1..4b2ccd9 100644
--- a/extension.json
+++ b/extension.json
@@ -15,6 +15,8 @@
     "release-schema.json"
   ],
   "codelists": [
+    "+classificationScheme.csv",
+    "+partyRole.csv",
     "+relatedProcessScheme.csv",
     "foreignSubsidyMeasures.csv",
     "sources.csv"