diff --git a/conanfile.py b/conanfile.py
index 23f83a5..97acb03 100644
--- a/conanfile.py
+++ b/conanfile.py
@@ -34,6 +34,7 @@ class ArbutilsConan(ConanFile):
 
     def package(self):
         self.copy("*.hpp", dst="include/Arbutils", src="src")
+        self.copy("*.hpp", dst="include/extern", src="extern")
         self.copy("*.dll", dst="bin", keep_path=False)
         self.copy("*.so", dst="lib", keep_path=False)
         self.copy("*.a", dst="lib", keep_path=False)