diff --git a/build.zig.zon b/build.zig.zon
index 5d303ad..b68d527 100644
--- a/build.zig.zon
+++ b/build.zig.zon
@@ -1,7 +1,7 @@
 .{
     .fingerprint = 0xdc47aff950fd68c0,
     .name = .solana_program_sdk,
-    .version = "0.16.2",
+    .version = "0.16.3",
     .minimum_zig_version = "0.14.0",
 
     // This field is optional.
diff --git a/src/instruction.zig b/src/instruction.zig
index a39d399..28de5c6 100644
--- a/src/instruction.zig
+++ b/src/instruction.zig
@@ -84,7 +84,7 @@ pub fn InstructionData(comptime Discriminant: type, comptime Data: type) type {
         discriminant: Discriminant,
         data: Data,
         const Self = @This();
-        fn asBytes(self: *const Self) []const u8 {
+        pub fn asBytes(self: *const Self) []const u8 {
             return std.mem.asBytes(self)[0..((@bitSizeOf(Discriminant) + @bitSizeOf(Data)) / 8)];
         }
     };