diff --git a/libs/postgres_ffi/src/pg_constants.rs b/libs/postgres_ffi/src/pg_constants.rs
index 6ce855c78ef5..f2d4f37d2bc2 100644
--- a/libs/postgres_ffi/src/pg_constants.rs
+++ b/libs/postgres_ffi/src/pg_constants.rs
@@ -203,8 +203,9 @@ pub const XLR_BLOCK_ID_DATA_LONG: u8 = 254;
 pub const XLR_BLOCK_ID_ORIGIN: u8 = 253;
 pub const XLR_BLOCK_ID_TOPLEVEL_XID: u8 = 252;
 
-pub const BKPBLOCK_FORK_MASK: u8 = 0x0F;
-pub const _BKPBLOCK_FLAG_MASK: u8 = 0xF0;
+pub const BKPBLOCK_FORK_MASK: u8 = 0x07;
+pub const BKPBLOCK_FLAG_MASK: u8 = 0xF8;
+pub const BKPBLOCK_OPAQUE: u8 = 0x08; /* page has no page header */
 pub const BKPBLOCK_HAS_IMAGE: u8 = 0x10; /* block data is an XLogRecordBlockImage */
 pub const BKPBLOCK_HAS_DATA: u8 = 0x20;
 pub const BKPBLOCK_WILL_INIT: u8 = 0x40; /* redo will re-init the page */
diff --git a/pageserver/src/walingest.rs b/pageserver/src/walingest.rs
index 804c7fca97c9..77d2d8f520e7 100644
--- a/pageserver/src/walingest.rs
+++ b/pageserver/src/walingest.rs
@@ -535,7 +535,7 @@ impl WalIngest {
             // The page may be uninitialized. If so, we can't set the LSN because
             // that would corrupt the page.
             //
-            if !page_is_new(&image) {
+            if !blk.opaque && !page_is_new(&image) {
                 page_set_lsn(&mut image, lsn)
             }
             assert_eq!(image.len(), BLCKSZ as usize);
diff --git a/pageserver/src/walrecord.rs b/pageserver/src/walrecord.rs
index 62a3a91b0be6..a811040eb51b 100644
--- a/pageserver/src/walrecord.rs
+++ b/pageserver/src/walrecord.rs
@@ -129,6 +129,7 @@ pub struct DecodedBkpBlock {
     pub apply_image: bool,
     /* has image that should be restored */
     pub will_init: bool,
+    pub opaque: bool,
     /* record doesn't need previous page version to apply */
     //char	   *bkp_image;
     pub hole_offset: u16,
@@ -1000,6 +1001,7 @@ pub fn decode_wal_record(
                 blk.has_image = (fork_flags & pg_constants::BKPBLOCK_HAS_IMAGE) != 0;
                 blk.has_data = (fork_flags & pg_constants::BKPBLOCK_HAS_DATA) != 0;
                 blk.will_init = (fork_flags & pg_constants::BKPBLOCK_WILL_INIT) != 0;
+                blk.opaque = (fork_flags & pg_constants::BKPBLOCK_OPAQUE) != 0;
                 blk.data_len = buf.get_u16_le();
 
                 /* TODO cross-check that the HAS_DATA flag is set iff data_length > 0 */
diff --git a/vendor/postgres-v16 b/vendor/postgres-v16
index 5377f5ed7290..60fab0e62ca0 160000
--- a/vendor/postgres-v16
+++ b/vendor/postgres-v16
@@ -1 +1 @@
-Subproject commit 5377f5ed7290af45b7cb6b0d98d43cbf4a4e77f3
+Subproject commit 60fab0e62ca0150276bf03231cc1339b29d3465c
diff --git a/vendor/revisions.json b/vendor/revisions.json
index 570dfc155056..7e5857981cb5 100644
--- a/vendor/revisions.json
+++ b/vendor/revisions.json
@@ -1,5 +1,5 @@
 {
-  "v16": ["16.3", "5377f5ed7290af45b7cb6b0d98d43cbf4a4e77f3"],
+  "v16": ["16.3", "60fab0e62ca0150276bf03231cc1339b29d3465c"],
   "v15": ["15.7", "9eba7dd382606ffca43aca865f337ec21bcdac73"],
   "v14": ["14.12", "7bbe834c8c2dc37802eca8484311599bc47341f6"]
 }