diff --git a/.travis.yml b/.travis.yml
index 3c28190..65c29ee 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -22,7 +22,7 @@ before_deploy:
 deploy:
   # Main releases: tags set on master
   - provider: script
-    script: poetry publish --build
+    script: make clean && poetry publish --build
     on:
       branch: master
       # We don't want to publish a release twice (once for each supported
diff --git a/common.mk b/common.mk
index 77f901a..eb3effa 100644
--- a/common.mk
+++ b/common.mk
@@ -30,3 +30,7 @@ lint: black flake8
 .PHONY: flake8
 flake8: configure
 	poetry run flake8 $(SRC)
+
+.PHONY: clean
+clean:
+	rm -rf .make .pytest_cache __pycache__ dist .hypothesis har_transformer.egg-info