diff --git a/33128/r18/TS33128Dictionaries.xml b/33128/r18/TS33128Dictionaries.xml
index 367c1eecd9e47d4ae9169dd631c44b50a22a9f33..666faa7a191fed84d13efc3a80f20cf5b3f0f461 100644
--- a/33128/r18/TS33128Dictionaries.xml
+++ b/33128/r18/TS33128Dictionaries.xml
@@ -70,6 +70,10 @@
IncludeNCGIInResponse
A request for returning the NCGI and additional CGIs in the response.
+
+ IncludeCSIInResponse
+ A request for returning CellSupplementalInformation in the response.
+
diff --git a/33128/r18/urn_3GPP_ns_li_3GPPLIQueryExtensions.xsd b/33128/r18/urn_3GPP_ns_li_3GPPLIQueryExtensions.xsd
index 0facb4f53eba8f17e05063d1cd4364fe94ff4648..2939311d1373af2e0684e8790368d3ab9e631010 100644
--- a/33128/r18/urn_3GPP_ns_li_3GPPLIQueryExtensions.xsd
+++ b/33128/r18/urn_3GPP_ns_li_3GPPLIQueryExtensions.xsd
@@ -163,6 +163,7 @@
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@@ -199,4 +200,283 @@
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