diff --git a/src/backend/utils/adt/tsginidx.c b/src/backend/utils/adt/tsginidx.c
index 2819d520e94..fef594700aa 100644
--- a/src/backend/utils/adt/tsginidx.c
+++ b/src/backend/utils/adt/tsginidx.c
@@ -377,3 +377,23 @@ gin_tsquery_consistent_6args(PG_FUNCTION_ARGS)
 		elog(ERROR, "gin_tsquery_consistent requires eight arguments");
 	return gin_tsquery_consistent(fcinfo);
 }
+
+/*
+ * Likewise, a stub version of gin_extract_tsquery declared with argument
+ * types that are no longer considered appropriate.
+ */
+Datum
+gin_extract_tsquery_oldsig(PG_FUNCTION_ARGS)
+{
+	return gin_extract_tsquery(fcinfo);
+}
+
+/*
+ * Likewise, a stub version of gin_tsquery_consistent declared with argument
+ * types that are no longer considered appropriate.
+ */
+Datum
+gin_tsquery_consistent_oldsig(PG_FUNCTION_ARGS)
+{
+	return gin_tsquery_consistent(fcinfo);
+}
diff --git a/src/backend/utils/adt/tsgistidx.c b/src/backend/utils/adt/tsgistidx.c
index ede11ddd48c..0100cf4f372 100644
--- a/src/backend/utils/adt/tsgistidx.c
+++ b/src/backend/utils/adt/tsgistidx.c
@@ -805,3 +805,16 @@ gtsvector_picksplit(PG_FUNCTION_ARGS)
 
 	PG_RETURN_POINTER(v);
 }
+
+/*
+ * Formerly, gtsvector_consistent was declared in pg_proc.h with arguments
+ * that did not match the documented conventions for GiST support functions.
+ * We fixed that, but we still need a pg_proc entry with the old signature
+ * to support reloading pre-9.6 contrib/tsearch2 opclass declarations.
+ * This compatibility function should go away eventually.
+ */
+Datum
+gtsvector_consistent_oldsig(PG_FUNCTION_ARGS)
+{
+	return gtsvector_consistent(fcinfo);
+}
diff --git a/src/backend/utils/adt/tsquery_gist.c b/src/backend/utils/adt/tsquery_gist.c
index 02693bd0ee8..5eebf216c07 100644
--- a/src/backend/utils/adt/tsquery_gist.c
+++ b/src/backend/utils/adt/tsquery_gist.c
@@ -262,3 +262,16 @@ gtsquery_picksplit(PG_FUNCTION_ARGS)
 
 	PG_RETURN_POINTER(v);
 }
+
+/*
+ * Formerly, gtsquery_consistent was declared in pg_proc.h with arguments
+ * that did not match the documented conventions for GiST support functions.
+ * We fixed that, but we still need a pg_proc entry with the old signature
+ * to support reloading pre-9.6 contrib/tsearch2 opclass declarations.
+ * This compatibility function should go away eventually.
+ */
+Datum
+gtsquery_consistent_oldsig(PG_FUNCTION_ARGS)
+{
+	return gtsquery_consistent(fcinfo);
+}
diff --git a/src/include/catalog/catversion.h b/src/include/catalog/catversion.h
index 6795834912a..2f57524fcb2 100644
--- a/src/include/catalog/catversion.h
+++ b/src/include/catalog/catversion.h
@@ -53,6 +53,6 @@
  */
 
 /*							yyyymmddN */
-#define CATALOG_VERSION_NO	201603011
+#define CATALOG_VERSION_NO	201603021
 
 #endif
diff --git a/src/include/catalog/pg_proc.h b/src/include/catalog/pg_proc.h
index 62b91252dc5..aec6c4ca904 100644
--- a/src/include/catalog/pg_proc.h
+++ b/src/include/catalog/pg_proc.h
@@ -4516,6 +4516,8 @@ DATA(insert OID = 3653 (  gtsvector_penalty		PGNSP PGUID 12 1 0 0 0 f f f f t f
 DESCR("GiST tsvector support");
 DATA(insert OID = 3654 (  gtsvector_consistent	PGNSP PGUID 12 1 0 0 0 f f f f t f i s 5 0 16 "2281 3614 21 26 2281" _null_ _null_ _null_ _null_ _null_ gtsvector_consistent _null_ _null_ _null_ ));
 DESCR("GiST tsvector support");
+DATA(insert OID = 3790 (  gtsvector_consistent	PGNSP PGUID 12 1 0 0 0 f f f f t f i s 5 0 16 "2281 3642 23 26 2281" _null_ _null_ _null_ _null_ _null_ gtsvector_consistent_oldsig _null_ _null_ _null_ ));
+DESCR("GiST tsvector support (obsolete)");
 
 DATA(insert OID = 3656 (  gin_extract_tsvector	PGNSP PGUID 12 1 0 0 0 f f f f t f i s 3 0 2281 "3614 2281 2281" _null_ _null_ _null_ _null_ _null_	gin_extract_tsvector _null_ _null_ _null_ ));
 DESCR("GIN tsvector support");
@@ -4535,6 +4537,11 @@ DATA(insert OID = 3087 (  gin_extract_tsquery	PGNSP PGUID 12 1 0 0 0 f f f f t f
 DESCR("GIN tsvector support (obsolete)");
 DATA(insert OID = 3088 (  gin_tsquery_consistent PGNSP PGUID 12 1 0 0 0 f f f f t f i s 6 0 16 "2281 21 3615 23 2281 2281" _null_ _null_ _null_ _null_ _null_ gin_tsquery_consistent_6args _null_ _null_ _null_ ));
 DESCR("GIN tsvector support (obsolete)");
+DATA(insert OID = 3791 (  gin_extract_tsquery	PGNSP PGUID 12 1 0 0 0 f f f f t f i s 7 0 2281 "3615 2281 21 2281 2281 2281 2281" _null_ _null_ _null_ _null_ _null_ gin_extract_tsquery_oldsig _null_ _null_ _null_ ));
+DESCR("GIN tsvector support (obsolete)");
+DATA(insert OID = 3792 (  gin_tsquery_consistent PGNSP PGUID 12 1 0 0 0 f f f f t f i s 8 0 16 "2281 21 3615 23 2281 2281 2281 2281" _null_ _null_ _null_ _null_ _null_	gin_tsquery_consistent_oldsig _null_ _null_ _null_ ));
+DESCR("GIN tsvector support (obsolete)");
+
 DATA(insert OID = 3789 (  gin_clean_pending_list PGNSP PGUID 12 1 0 0 0 f f f f t f v s 1 0 20 "2205" _null_ _null_ _null_ _null_ _null_ gin_clean_pending_list _null_ _null_ _null_ ));
 DESCR("clean up GIN pending list");
 
@@ -4578,6 +4585,8 @@ DATA(insert OID = 3700 (  gtsquery_penalty				PGNSP PGUID 12 1 0 0 0 f f f f t f
 DESCR("GiST tsquery support");
 DATA(insert OID = 3701 (  gtsquery_consistent			PGNSP PGUID 12 1 0 0 0 f f f f t f i s 5 0 16 "2281 3615 21 26 2281" _null_ _null_ _null_ _null_ _null_ gtsquery_consistent _null_ _null_ _null_ ));
 DESCR("GiST tsquery support");
+DATA(insert OID = 3793 (  gtsquery_consistent			PGNSP PGUID 12 1 0 0 0 f f f f t f i s 5 0 16 "2281 2281 23 26 2281" _null_ _null_ _null_ _null_ _null_ gtsquery_consistent_oldsig _null_ _null_ _null_ ));
+DESCR("GiST tsquery support (obsolete)");
 
 DATA(insert OID = 3686 (  tsmatchsel		PGNSP PGUID 12 1 0 0 0 f f f f t f s s 4 0 701 "2281 26 2281 23" _null_ _null_ _null_ _null_ _null_ tsmatchsel _null_ _null_ _null_ ));
 DESCR("restriction selectivity of tsvector @@ tsquery");
diff --git a/src/include/tsearch/ts_utils.h b/src/include/tsearch/ts_utils.h
index 3b886b3c72b..88533a64235 100644
--- a/src/include/tsearch/ts_utils.h
+++ b/src/include/tsearch/ts_utils.h
@@ -132,6 +132,7 @@ extern Datum gtsvector_union(PG_FUNCTION_ARGS);
 extern Datum gtsvector_same(PG_FUNCTION_ARGS);
 extern Datum gtsvector_penalty(PG_FUNCTION_ARGS);
 extern Datum gtsvector_picksplit(PG_FUNCTION_ARGS);
+extern Datum gtsvector_consistent_oldsig(PG_FUNCTION_ARGS);
 
 /*
  * IO functions for pseudotype gtsvector
@@ -153,6 +154,8 @@ extern Datum gin_tsquery_triconsistent(PG_FUNCTION_ARGS);
 extern Datum gin_extract_tsvector_2args(PG_FUNCTION_ARGS);
 extern Datum gin_extract_tsquery_5args(PG_FUNCTION_ARGS);
 extern Datum gin_tsquery_consistent_6args(PG_FUNCTION_ARGS);
+extern Datum gin_extract_tsquery_oldsig(PG_FUNCTION_ARGS);
+extern Datum gin_tsquery_consistent_oldsig(PG_FUNCTION_ARGS);
 
 /*
  * Possible strategy numbers for indexes
@@ -217,6 +220,7 @@ extern Datum gtsquery_union(PG_FUNCTION_ARGS);
 extern Datum gtsquery_same(PG_FUNCTION_ARGS);
 extern Datum gtsquery_penalty(PG_FUNCTION_ARGS);
 extern Datum gtsquery_picksplit(PG_FUNCTION_ARGS);
+extern Datum gtsquery_consistent_oldsig(PG_FUNCTION_ARGS);
 
 /*
  * Parser interface to SQL