diff --git a/test-proxy/src/main/java/com/google/cloud/bigtable/testproxy/StatementDeserializer.java b/test-proxy/src/main/java/com/google/cloud/bigtable/testproxy/StatementDeserializer.java
index b0d5a4d34..4eb5f47e3 100644
--- a/test-proxy/src/main/java/com/google/cloud/bigtable/testproxy/StatementDeserializer.java
+++ b/test-proxy/src/main/java/com/google/cloud/bigtable/testproxy/StatementDeserializer.java
@@ -90,10 +90,10 @@ static Statement toStatement(ExecuteQueryRequest request) {
           break;
         case TIMESTAMP_TYPE:
           if (value.getKindCase().equals(KindCase.KIND_NOT_SET)) {
-            statementBuilder.setTimestampParamInstant(name, null);
+            statementBuilder.setTimestampParam(name, null);
           } else if (value.getKindCase().equals(KindCase.TIMESTAMP_VALUE)) {
             Timestamp ts = value.getTimestampValue();
-            statementBuilder.setTimestampParamInstant(name, toInstant(ts));
+            statementBuilder.setTimestampParam(name, toInstant(ts));
           } else {
             throw new IllegalArgumentException("Malformed timestamp value: " + value);
           }