diff --git a/tools/cldr-code/src/main/java/org/unicode/cldr/json/Ldml2JsonConverter.java b/tools/cldr-code/src/main/java/org/unicode/cldr/json/Ldml2JsonConverter.java
index 32bf5429df7..bfe41b679e5 100644
--- a/tools/cldr-code/src/main/java/org/unicode/cldr/json/Ldml2JsonConverter.java
+++ b/tools/cldr-code/src/main/java/org/unicode/cldr/json/Ldml2JsonConverter.java
@@ -1386,6 +1386,10 @@ public void writePackageJson(String outputDir, String packageName) throws IOExce
         obj.addProperty("license", CLDRURLS.UNICODE_SPDX);
         obj.addProperty("bugs", CLDRURLS.CLDR_NEWTICKET_URL);
 
+        final SupplementalDataInfo sdi = CLDRConfig.getInstance().getSupplementalDataInfo();
+        obj.addProperty("cldrVersion", sdi.getCldrVersionString());
+        obj.addProperty("unicodeVersion", sdi.getUnicodeVersionString());
+
         outf.println(gson.toJson(obj));
         outf.close();
     }
diff --git a/tools/cldr-code/src/main/java/org/unicode/cldr/util/SupplementalDataInfo.java b/tools/cldr-code/src/main/java/org/unicode/cldr/util/SupplementalDataInfo.java
index b2bb5111875..a5aac3b40e5 100644
--- a/tools/cldr-code/src/main/java/org/unicode/cldr/util/SupplementalDataInfo.java
+++ b/tools/cldr-code/src/main/java/org/unicode/cldr/util/SupplementalDataInfo.java
@@ -897,6 +897,9 @@ public enum RBNFGroup {
 
     private VersionInfo cldrVersion;
 
+    private String cldrVersionString = null;
+    private String unicodeVersion = null;
+
     private Map<String, PopulationData> territoryToPopulationData = new TreeMap<>();
 
     private Map<String, Map<String, PopulationData>> territoryToLanguageToPopulationData =
@@ -1325,7 +1328,9 @@ public void handlePathValue(String path, String value) {
                             // old format
                             version = parts.getAttributeValue(0, "version");
                         }
+                        cldrVersionString = version;
                         cldrVersion = VersionInfo.getInstance(version);
+                        unicodeVersion = parts.getAttributeValue(1, "unicodeVersion");
                     }
                     return;
                 }
@@ -4961,6 +4966,18 @@ public VersionInfo getCldrVersion() {
         return cldrVersion;
     }
 
+    public String getUnicodeVersionString() {
+        return unicodeVersion;
+    }
+
+    public VersionInfo getUnicodeVersion() {
+        return VersionInfo.getInstance(getUnicodeVersionString());
+    }
+
+    public String getCldrVersionString() {
+        return cldrVersionString;
+    }
+
     public File getDirectory() {
         return directory;
     }