diff --git a/.github/workflows/synkronus-docker.yml b/.github/workflows/synkronus-docker.yml
index f23bdfa03..d46cdd9a7 100644
--- a/.github/workflows/synkronus-docker.yml
+++ b/.github/workflows/synkronus-docker.yml
@@ -26,8 +26,10 @@ on:
 
 env:
   REGISTRY: ghcr.io
-  # OCI/GHCR image names must be lowercase; repository_owner can be mixed-case.
-  IMAGE_NAME: ${{ format('{0}/synkronus', lower(github.repository_owner)) }}
+  # OCI/GHCR image names must be lowercase. GitHub Actions expressions have no
+  # `lower()` function, so we hardcode the owner segment rather than deriving
+  # it from ${{ github.repository_owner }} (which is mixed-case "OpenDataEnsemble").
+  IMAGE_NAME: opendataensemble/synkronus
   # Run JS-based actions on Node 24 until they ship Node 24-native runners (see GitHub changelog).
   FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
 
diff --git a/synkronus-portal/src/services/api.ts b/synkronus-portal/src/services/api.ts
index bd051d1e0..2e1d278f7 100644
--- a/synkronus-portal/src/services/api.ts
+++ b/synkronus-portal/src/services/api.ts
@@ -175,7 +175,7 @@ export const api = {
 
   async getVersion(): Promise<VersionInfo> {
     try {
-      const res = await defaultApi.getVersion();
+      const res = await defaultApi.getVersion({ xOdeVersion: ODE_VERSION });
       return res.data as VersionInfo;
     } catch (error) {
       throw toApiError(error, { redirectOnUnauthorized: false });
@@ -380,21 +380,24 @@ export const api = {
   async downloadBlob(endpoint: string): Promise<Blob> {
     try {
       if (endpoint === '/dataexport/parquet') {
-        const res = await dataExportApi.getParquetExportZip({
-          responseType: 'blob',
-        });
+        const res = await dataExportApi.getParquetExportZip(
+          { xOdeVersion: ODE_VERSION },
+          { responseType: 'blob' },
+        );
         return res.data as unknown as Blob;
       }
       if (endpoint === '/dataexport/raw-json') {
-        const res = await dataExportApi.getRawJsonExportZip({
-          responseType: 'blob',
-        });
+        const res = await dataExportApi.getRawJsonExportZip(
+          { xOdeVersion: ODE_VERSION },
+          { responseType: 'blob' },
+        );
         return res.data as unknown as Blob;
       }
       if (endpoint === '/attachments/export-zip') {
-        const res = await attachmentsApi.getAttachmentsExportZip({
-          responseType: 'blob',
-        });
+        const res = await attachmentsApi.getAttachmentsExportZip(
+          { xOdeVersion: ODE_VERSION },
+          { responseType: 'blob' },
+        );
         return res.data as unknown as Blob;
       }
     } catch (error) {