diff --git a/.travis.yml b/.travis.yml
index 1fca9557..79e704eb 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,7 +1,3 @@
-env:
-  global:
-    - mp-units:CONAN_RUN_TESTS: TRUE
-
 linux: &linux
   os: linux
   dist: xenial
diff --git a/build.py b/build.py
index c923c4c8..903ff2eb 100644
--- a/build.py
+++ b/build.py
@@ -26,4 +26,5 @@ if __name__ == "__main__":
     builder.add_common_builds(pure_c=False)
     for settings, options, env_vars, build_requires, reference in builder.items:
         settings["compiler.cppstd"] = "20"
+        env_vars["mp-units:CONAN_RUN_TESTS"] = "True"
     builder.run()