diff --git a/engine/core/build.zig b/engine/core/build.zig
index 6956563..2705aa9 100644
--- a/engine/core/build.zig
+++ b/engine/core/build.zig
@@ -30,16 +30,21 @@ pub fn build(b: *std.Build) void {
 
     const test_step = b.step("test", "run unit tests for core");
     const tests = b.addTest(.{
-        .target = target,
-        .optimize = optimize,
-        .root_source_file = b.path("tests/tests.zig"),
+        .root_module = b.createModule(.{
+            .target = target,
+            .optimize = optimize,
+            .root_source_file = b.path("tests/tests.zig"),
+        }),
     });
 
-    const sampleGameExtern = b.addSharedLibrary(.{
-        .root_source_file = b.path("tests/externalModule.zig"),
-        .link_libc = true,
-        .optimize = optimize,
-        .target = target,
+    const sampleGameExtern = b.addLibrary(.{
+        .root_module = b.createModule(.{
+            .root_source_file = b.path("tests/externalModule.zig"),
+            .link_libc = true,
+            .optimize = optimize,
+            .target = target,
+        }),
+        .linkage = .dynamic,
         .name = "external",
     });