diff --git a/chord_metadata_service/chord/tests/example_experiment.json b/chord_metadata_service/chord/tests/example_experiment.json
index 8f6868db4..e263eeca1 100644
--- a/chord_metadata_service/chord/tests/example_experiment.json
+++ b/chord_metadata_service/chord/tests/example_experiment.json
@@ -13,7 +13,7 @@
       ],
       "library_strategy": "ChIP-Seq",
       "library_source": "Genomic",
-      "library_selection": "Random",
+      "library_selection": "RANDOM",
       "library_layout": "Single",
       "extraction_protocol": "NGS",
       "molecule": "genomic DNA",
@@ -75,4 +75,4 @@
       "url": "http://purl.obolibrary.org/obo/so.owl"
     }
   ]
-}
\ No newline at end of file
+}
diff --git a/chord_metadata_service/chord/tests/example_experiment_bad_biosample.json b/chord_metadata_service/chord/tests/example_experiment_bad_biosample.json
index b1f051378..931f15521 100644
--- a/chord_metadata_service/chord/tests/example_experiment_bad_biosample.json
+++ b/chord_metadata_service/chord/tests/example_experiment_bad_biosample.json
@@ -13,7 +13,7 @@
       ],
       "library_strategy": "ChIP-Seq",
       "library_source": "Genomic",
-      "library_selection": "Random",
+      "library_selection": "RANDOM",
       "library_layout": "Single",
       "extraction_protocol": "NGS",
       "molecule": "genomic DNA",
@@ -75,4 +75,4 @@
       "url": "http://purl.obolibrary.org/obo/so.owl"
     }
   ]
-}
\ No newline at end of file
+}
diff --git a/chord_metadata_service/experiments/tests/example_experiments.json b/chord_metadata_service/experiments/tests/example_experiments.json
index e888df91b..a36023f59 100644
--- a/chord_metadata_service/experiments/tests/example_experiments.json
+++ b/chord_metadata_service/experiments/tests/example_experiments.json
@@ -13,7 +13,7 @@
       ],
       "library_strategy": "ChIP-Seq",
       "library_source": "Genomic",
-      "library_selection": "Random",
+      "library_selection": "RANDOM",
       "library_layout": "Single",
       "extraction_protocol": "NGS",
       "molecule": "genomic DNA",
@@ -77,7 +77,7 @@
       ],
       "library_strategy": "ChIP-Seq",
       "library_source": "Genomic",
-      "library_selection": "Random",
+      "library_selection": "RANDOM",
       "library_layout": "Single",
       "extraction_protocol": "NGS",
       "molecule": "genomic DNA",
@@ -139,4 +139,4 @@
       "url": "http://purl.obolibrary.org/obo/so.owl"
     }
   ]
-}
\ No newline at end of file
+}