diff --git a/bindings/napi/blst.zig b/bindings/napi/blst.zig
index 8a1384f8e..5a75b7670 100644
--- a/bindings/napi/blst.zig
+++ b/bindings/napi/blst.zig
@@ -136,10 +136,10 @@ pub const PublicKey = struct {
     pub fn toBytes(self: *const PublicKey, compress: ?js.Boolean) !js.Uint8Array {
         if (try boolOrDefault(compress, true)) {
             const bytes = self.raw.compress();
-            return js.Uint8Array.from(bytes[0..]);
+            return js.Uint8Array.fromExternal(bytes[0..]);
         }
         const bytes = self.raw.serialize();
-        return js.Uint8Array.from(bytes[0..]);
+        return js.Uint8Array.fromExternal(bytes[0..]);
     }
 
     pub fn toHex(self: *const PublicKey, compress: ?js.Boolean) !js.String {
@@ -214,10 +214,10 @@ pub const Signature = struct {
     pub fn toBytes(self: *const Signature, compress: ?js.Boolean) !js.Uint8Array {
         if (try boolOrDefault(compress, true)) {
             const bytes = self.raw.compress();
-            return js.Uint8Array.from(bytes[0..]);
+            return js.Uint8Array.fromExternal(bytes[0..]);
         }
         const bytes = self.raw.serialize();
-        return js.Uint8Array.from(bytes[0..]);
+        return js.Uint8Array.fromExternal(bytes[0..]);
     }
 
     pub fn toHex(self: *const Signature, compress: ?js.Boolean) !js.String {
@@ -295,9 +295,9 @@ pub const SecretKey = struct {
     }
 
     /// Serializes the SecretKey to bytes (32 bytes).
-    pub fn toBytes(self: *const SecretKey) js.Uint8Array {
+    pub fn toBytes(self: *const SecretKey) !js.Uint8Array {
         const bytes = self.raw.serialize();
-        return js.Uint8Array.from(bytes[0..]);
+        return js.Uint8Array.fromExternal(bytes[0..]);
     }
 
     pub fn toHex(self: *const SecretKey) !js.String {
diff --git a/build.zig.zon b/build.zig.zon
index 29ace6b05..d7a5737d9 100644
--- a/build.zig.zon
+++ b/build.zig.zon
@@ -36,8 +36,8 @@
             .hash = "zig_yaml-0.1.0-C1161kFWAwDxjKAFmklKwWVDvz2mmq0Q__bDhGGjeyd3",
         },
         .zapi = .{
-            .url = "git+https://github.com/chainsafe/zapi?ref=zapi-v2.0.0#f9fa8b0237352326e9f970b62588b6af01e3e384",
-            .hash = "zapi-2.0.0-rIqzUcc3BABKRuJlzpYNtiMVCOFybuVSGOLmk0KOCeel",
+            .url = "git+https://github.com/chainsafe/zapi?ref=zapi-v2.1.0#c5c877af9742d9d7fd6cab2ce6fec698817d56cd",
+            .hash = "zapi-2.1.0-rIqzUbxNBADOW16nSYQfUOtib1TgC8PxbR4ggN6ezYfA",
         },
         .zbench = .{
             .url = "git+https://github.com/hendriknielaender/zBench#b2b89c475e3ef1bb2bd71255c80478a82d3e0ca8",