diff --git a/build.zig b/build.zig
index 239260b..b05604f 100644
--- a/build.zig
+++ b/build.zig
@@ -49,7 +49,7 @@ pub fn build(b: *std.Build) void {
     const tinfo = target.result;
     switch (tinfo.os.tag) {
         .windows => {
-            lib.defineCMacro("_WIN32", null);
+            lib.root_module.addCMacro("_WIN32", "");
             lib.addCSourceFiles(.{
                 .root = src_root,
                 .files = win_sources,
@@ -58,15 +58,15 @@ pub fn build(b: *std.Build) void {
             lib.linkSystemLibrary("ws2_32");
         },
         else => if (tinfo.isDarwin()) {
-            lib.defineCMacro("DARWIN", null);
+            lib.root_module.addCMacro("DARWIN", "");
             lib.addCSourceFiles(.{
                 .root = src_root,
                 .files = unix_sources,
                 .flags = cflags,
             });
         } else {
-            lib.defineCMacro("_GNU_SOURCE", null);
-            lib.defineCMacro("LINUX", null);
+            lib.root_module.addCMacro("_GNU_SOURCE", "");
+            lib.root_module.addCMacro("LINUX", "");
             lib.addCSourceFiles(.{
                 .root = src_root,
                 .files = unix_sources,
@@ -80,7 +80,7 @@ pub fn build(b: *std.Build) void {
         },
     }
 
-    lib.defineCMacro("_REENTRANT", null);
+    lib.root_module.addCMacro("_REENTRANT", "");
 
     for (install_headers) |header| {
         lib.installHeader(
@@ -90,17 +90,17 @@ pub fn build(b: *std.Build) void {
     }
 
     if (tls_dep) |dep| {
-        lib.defineCMacro("NATS_HAS_TLS", null);
-        lib.defineCMacro("NATS_USE_OPENSSL_1_1", null);
+        lib.root_module.addCMacro("NATS_HAS_TLS", "");
+        lib.root_module.addCMacro("NATS_USE_OPENSSL_1_1", "");
         if (tls_verify)
-            lib.defineCMacro("NATS_FORCE_HOST_VERIFICATION", null);
+            lib.root_module.addCMacro("NATS_FORCE_HOST_VERIFICATION", "");
         lib.linkLibrary(dep.artifact("ssl"));
     }
 
     if (protobuf_runtime) |dep| {
         lib.addIncludePath(upstream.path("deps"));
         lib.addIncludePath(upstream.path("stan"));
-        lib.defineCMacro("NATS_HAS_STREAMING", null);
+        lib.root_module.addCMacro("NATS_HAS_STREAMING", "");
 
         lib.addCSourceFiles(.{
             .root = src_root,
@@ -111,7 +111,7 @@ pub fn build(b: *std.Build) void {
     }
 
     if (libsodium_dep) |dep| {
-        lib.defineCMacro("NATS_USE_LIBSODIUM", null);
+        lib.root_module.addCMacro("NATS_USE_LIBSODIUM", "");
         // yep
         lib.linkLibrary(dep.artifact(if (tinfo.isMinGW()) "libsodium-static" else "sodium"));
     }
diff --git a/build.zig.zon b/build.zig.zon
index 04129e2..32a0583 100644
--- a/build.zig.zon
+++ b/build.zig.zon
@@ -8,8 +8,8 @@
             .hash = "12203347177845724e82819c0243caa502b054427c75f29e7f22988c67f5a91bd504",
         },
         .libressl = .{
-            .url = "git+https://github.com/allyourcodebase/libressl.git?ref=4.0.0#7aa9871c8c9897228662e61d1355f13491857913",
-            .hash = "1220a9ccbd8d9ba60b665a19ebdc5b412ac48e0eeb588616f087f6dd739a23fed5d6",
+            .url = "git+https://github.com/allyourcodebase/libressl.git?ref=4.0.0+1#fd0fe777153a75217e97ba22cd8b32005bb90d08",
+            .hash = "1220c6521dd6d37f0426fbe6c3b3c3f4282f28495311abc08fb4cebf21ea2346ba2f",
             .lazy = true,
         },
         .protobuf_c = .{
@@ -18,8 +18,8 @@
             .lazy = true,
         },
         .libsodium = .{
-            .url = "git+https://github.com/jedisct1/libsodium.git?ref=stable#8f36e67d8dcb7c8bd32b2ccf9891caa7825ead41",
-            .hash = "122082bb74ee448b76311bb229f3886628a5fdbf0d34ac9bbccec6f28471d82caa3b",
+            .url = "git+https://github.com/jedisct1/libsodium.git?ref=stable#59a98bc7f9d507175f551a53bfc0b2081f06e3ba",
+            .hash = "1220297067945b08f44a20b3b20e5e0fd39e178a30d96d4a3531fed5999252f52eea",
             .lazy = true,
         },
     },