diff --git a/conanfile.py b/conanfile.py
index 02cdd81..cb56710 100644
--- a/conanfile.py
+++ b/conanfile.py
@@ -67,11 +67,13 @@ def lazy_lt_semver(v1, v2):
             raise ConanInvalidConfiguration(
                 f"{self.name} {self.version} requires C++{self._min_cppstd}, which your compiler ({compiler}-{version}) does not support")
 
-    def requirements(self):
-        self.requires("libhal/[^2.0.0 ]")
-        self.requires("libhal-util/[^2.0.0 || ^3.0.0]")
+    def build_requirements(self):
         self.test_requires("boost-ext-ut/1.1.9")
 
+    def requirements(self):
+        self.requires("libhal/[^2.0.3]", transitive_headers=True)
+        self.requires("libhal-util/[^3.0.1]")
+
     def layout(self):
         cmake_layout(self)