diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index cba8314..f0913a1 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -8,7 +8,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        postgres: [13, 12, 11, 10, 9.6]
+        postgres: [14, 13, 12, 11, 10, 9.6]
         include:
         - os: macos-latest
           postgres: 13
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5802ddc..d96c7a4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.1.9 (unreleased)
+
+- Added support for Postgres 14
+
 ## 0.1.8 (2021-09-07)
 
 - Added cast for `vector` to `real[]`
diff --git a/src/ivfflat.h b/src/ivfflat.h
index 44d6583..c7576d4 100644
--- a/src/ivfflat.h
+++ b/src/ivfflat.h
@@ -180,6 +180,9 @@ void		IvfflatInitPage(Relation index, Buffer *buf, Page *page, GenericXLogState
 IndexBuildResult *ivfflatbuild(Relation heap, Relation index, IndexInfo *indexInfo);
 void		ivfflatbuildempty(Relation index);
 bool		ivfflatinsert(Relation index, Datum *values, bool *isnull, ItemPointer heap_tid, Relation heap, IndexUniqueCheck checkUnique
+#if PG_VERSION_NUM >= 140000
+						  ,bool indexUnchanged
+#endif
 #if PG_VERSION_NUM >= 100000
 						  ,IndexInfo *indexInfo
 #endif
diff --git a/src/ivfinsert.c b/src/ivfinsert.c
index fa10f0f..9e63662 100644
--- a/src/ivfinsert.c
+++ b/src/ivfinsert.c
@@ -128,6 +128,9 @@ InsertTuple(Relation rel, IndexTuple itup, Relation heapRel, Datum *values)
 bool
 ivfflatinsert(Relation index, Datum *values, bool *isnull, ItemPointer heap_tid,
 			  Relation heap, IndexUniqueCheck checkUnique
+#if PG_VERSION_NUM >= 140000
+			  ,bool indexUnchanged
+#endif
 #if PG_VERSION_NUM >= 100000
 			  ,IndexInfo *indexInfo
 #endif