diff --git a/build.zig b/build.zig
index a3275d3..e845702 100644
--- a/build.zig
+++ b/build.zig
@@ -70,6 +70,7 @@ pub fn build(b: *std.Build) !void {
             .test_runner = .{ .path = b.path("test_runner.zig"), .mode = .simple },
         });
         addLibs(lib_test, modules);
+        lib_test.linkLibC();
         lib_test.addLibraryPath(std.Build.LazyPath{ .cwd_relative = "/opt/openssl/lib" });
         lib_test.addIncludePath(std.Build.LazyPath{ .cwd_relative = "/opt/openssl/include" });
         lib_test.linkSystemLibrary("crypto");
diff --git a/src/result.zig b/src/result.zig
index b47cf9f..0d0ccd4 100644
--- a/src/result.zig
+++ b/src/result.zig
@@ -1252,6 +1252,17 @@ test "Result: UUID" {
     try t.expectSlice(u8, &.{ 174, 47, 71, 95, 128, 112, 65, 183, 186, 51, 134, 187, 168, 137, 123, 222 }, row.get([]u8, 1));
 }
 
+test "Result: lsn" {
+    var c = t.connect(.{});
+    defer c.deinit();
+    const sql = "select $1::pg_lsn + 1";
+    var result = try c.query(sql, .{ 32788447688 });
+    defer result.deinit();
+
+    const row = (try result.next()).?;
+    try t.expectEqual(32788447689, row.get(i64, 0));
+}
+
 test "Row: column names" {
     var c = t.connect(.{});
     defer c.deinit();
diff --git a/src/types.zig b/src/types.zig
index 2406ca9..a49dbe9 100644
--- a/src/types.zig
+++ b/src/types.zig
@@ -93,7 +93,7 @@ pub const Int32 = struct {
     }
 
     pub fn decode(data: []const u8, data_oid: i32) i32 {
-        lib.assertDecodeType(i32, &.{Int32.oid.decimal}, data_oid);
+        lib.assertDecodeType(i32, &.{Int32.oid.decimal, Xid.oid.decimal}, data_oid);
         return Int32.decodeKnown(data);
     }
 
@@ -119,9 +119,9 @@ pub const Int64 = struct {
 
     pub fn decode(data: []const u8, data_oid: i32) i64 {
         switch (data_oid) {
-            Timestamp.oid.decimal, TimestampTz.oid.decimal => return Timestamp.decode(data, data_oid),
+            Timestamp.oid.decimal, TimestampTz.oid.decimal => return Timestamp.decodeKnown(data),
             else => {
-                lib.assertDecodeType(i64, &.{Int64.oid.decimal}, data_oid);
+                lib.assertDecodeType(i64, &.{Int64.oid.decimal, PgLSN.oid.decimal, Xid8.oid.decimal}, data_oid);
                 return Int64.decodeKnown(data);
             },
         }
@@ -368,6 +368,21 @@ pub const UUID = struct {
     }
 };
 
+pub const PgLSN = struct {
+    pub const oid = OID.make(3220);
+    const encoding = &binary_encoding;
+};
+
+pub const Xid = struct {
+    pub const oid = OID.make(28);
+    const encoding = &binary_encoding;
+};
+
+pub const Xid8 = struct {
+    pub const oid = OID.make(5069);
+    const encoding = &binary_encoding;
+};
+
 pub const MacAddr = struct {
     pub const oid = OID.make(829);
     const encoding = &binary_encoding;
@@ -1137,7 +1152,7 @@ pub fn bindValue(comptime T: type, oid: i32, value: anytype, buf: *buffer.Buffer
                 if (value > 255 or value < 0) return error.IntWontFit;
                 return Char.encode(@intCast(value), buf, format_pos);
             },
-            Int64.oid.decimal => return Int64.encode(@intCast(value), buf, format_pos),
+            Int64.oid.decimal, PgLSN.oid.decimal => return Int64.encode(@intCast(value), buf, format_pos),
             else => return error.BindWrongType,
         },
         .int => switch (oid) {
-- 
2.51.2


From 97e28a31960a8aeaaebdd13232d1cbed36600bea Mon Sep 17 00:00:00 2001
From: Karl Seguin <k@openmymind.io>
Date: Sun, 17 Aug 2025 10:13:37 +0800
Subject: [PATCH 2/3] better support for lsn/xid

---
 src/types.zig | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/types.zig b/src/types.zig
index a49dbe9..cd470a9 100644
--- a/src/types.zig
+++ b/src/types.zig
@@ -1152,7 +1152,7 @@ pub fn bindValue(comptime T: type, oid: i32, value: anytype, buf: *buffer.Buffer
                 if (value > 255 or value < 0) return error.IntWontFit;
                 return Char.encode(@intCast(value), buf, format_pos);
             },
-            Int64.oid.decimal, PgLSN.oid.decimal => return Int64.encode(@intCast(value), buf, format_pos),
+            Int64.oid.decimal, PgLSN.oid.decimal, Xid8.oid.decimal => return Int64.encode(@intCast(value), buf, format_pos),
             else => return error.BindWrongType,
         },
         .int => switch (oid) {
@@ -1160,7 +1160,7 @@ pub fn bindValue(comptime T: type, oid: i32, value: anytype, buf: *buffer.Buffer
                 if (value > 32767 or value < -32768) return error.IntWontFit;
                 return Int16.encode(@intCast(value), buf, format_pos);
             },
-            Int32.oid.decimal => {
+            Int32.oid.decimal, Xid.oid.decimal => {
                 if (value > 2147483647 or value < -2147483648) return error.IntWontFit;
                 return Int32.encode(@intCast(value), buf, format_pos);
             },
@@ -1170,7 +1170,7 @@ pub fn bindValue(comptime T: type, oid: i32, value: anytype, buf: *buffer.Buffer
                 if (value > 255 or value < 0) return error.IntWontFit;
                 return Char.encode(@intCast(value), buf, format_pos);
             },
-            Int64.oid.decimal => {
+            Int64.oid.decimal, PgLSN.oid.decimal, Xid8.oid.decimal => {
                 if (value > 9223372036854775807 or value < -9223372036854775808) {
                     return error.IntWontFit;
                 }
-- 
2.51.2


From 1d6df57393c9b1dcf4a4b4d057a0f098923a160e Mon Sep 17 00:00:00 2001
From: Karl Seguin <k@openmymind.io>
Date: Tue, 19 Aug 2025 08:10:17 +0800
Subject: [PATCH 3/3] add pglsn and xid(8) types to readme

---
 readme.md | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/readme.md b/readme.md
index f2cc80d..6081c14 100644
--- a/readme.md
+++ b/readme.md
@@ -518,6 +518,11 @@ When binding to an array of JSON or JSONB, automatic serialization is not suppor
 
 When reading a `JSON` or `JSONB` column with `[]u8`, the serialized JSON will be returned.
 
+### PgLSN, xid8, xid
+PgLSN and xid8 can be bound and read as i64.
+
+xid can be bound and read as i32.
+
 ## Listen / Notify
 You can create a `pg.Listener` either from an existing `Pool` or directly.