diff --git a/python/cudf/cudf/_lib/cpp/aggregation.pxd b/python/cudf/cudf/_lib/cpp/aggregation.pxd
index 13bfa49057c..19605a60d8d 100644
--- a/python/cudf/cudf/_lib/cpp/aggregation.pxd
+++ b/python/cudf/cudf/_lib/cpp/aggregation.pxd
@@ -38,17 +38,13 @@ cdef extern from "cudf/aggregation.hpp" namespace "cudf" nogil:
             COLLECT_SET 'cudf::aggregation::COLLECT_SET'
             PTX 'cudf::aggregation::PTX'
             CUDA 'cudf::aggregation::CUDA'
+            CORRELATION 'cudf::aggregation::CORRELATION'
+
         Kind kind
 
     cdef cppclass rolling_aggregation:
         aggregation.Kind kind
 
-    cdef cppclass groupby_aggregation:
-        aggregation.Kind kind
-
-    cdef cppclass groupby_scan_aggregation:
-        aggregation.Kind kind
-
     ctypedef enum udf_type:
         CUDA 'cudf::udf_type::CUDA'
         PTX 'cudf::udf_type::PTX'