diff --git a/elasticsearch_dsl/__init__.py b/elasticsearch_dsl/__init__.py
index c2e2179f..e7de5319 100644
--- a/elasticsearch_dsl/__init__.py
+++ b/elasticsearch_dsl/__init__.py
@@ -42,6 +42,7 @@
     Boolean,
     Byte,
     Completion,
+    ConstantKeyword,
     CustomField,
     Date,
     DateRange,
@@ -113,6 +114,7 @@
     "Boolean",
     "Byte",
     "Completion",
+    "ConstantKeyword",
     "CustomField",
     "Date",
     "DateHistogramFacet",