diff --git a/buildSrc/src/main/groovy/io/deephaven/csv/Constants.groovy b/buildSrc/src/main/groovy/io/deephaven/csv/Constants.groovy
index 7cf50033..b85c6545 100644
--- a/buildSrc/src/main/groovy/io/deephaven/csv/Constants.groovy
+++ b/buildSrc/src/main/groovy/io/deephaven/csv/Constants.groovy
@@ -3,5 +3,5 @@ package io.deephaven.csv
 class Constants {
     public static int LATEST_LTS = 21
 
-    public static int[] TEST_VERSIONS = [8, 11, 17, 21]
+    public static int[] TEST_VERSIONS = [8, 11, 17, 21, 23]
 }