diff --git a/.github/workflows/prepare_test_data.yaml b/.github/workflows/prepare_test_data.yaml
index e694d2de..f82c945c 100644
--- a/.github/workflows/prepare_test_data.yaml
+++ b/.github/workflows/prepare_test_data.yaml
@@ -57,6 +57,14 @@ jobs:
                   # Spatial Genomics seqFISH v2
                   curl -O https://s3.embl.de/spatialdata/raw_data/seqfish-2-test-dataset.zip
 
+                  # -------
+                  # MACSima OMAP datasets are licensed as CC BY 4.0
+                  # OMAP23 for format v1.x.x
+                  curl -o OMAP23_small.zip "https://zenodo.org/api/records/18196452/files-archive"
+
+                  # OMAP10 for format v0.x.x
+                  curl -o OMAP10_small.zip "https://zenodo.org/api/records/18196366/files-archive"
+
             - name: Unzip files
               run: |
                   cd ./data