diff --git a/dev-python/pydiffx/pydiffx-1.0.1.ebuild b/dev-python/pydiffx/pydiffx-1.0.1-r1.ebuild
similarity index 85%
rename from dev-python/pydiffx/pydiffx-1.0.1.ebuild
rename to dev-python/pydiffx/pydiffx-1.0.1-r1.ebuild
index baa4b006060e9..d20ee3c8b60d2 100644
--- a/dev-python/pydiffx/pydiffx-1.0.1.ebuild
+++ b/dev-python/pydiffx/pydiffx-1.0.1-r1.ebuild
@@ -35,3 +35,9 @@ BDEPEND="
 "
 
 distutils_enable_tests unittest
+
+src_prepare() {
+	# remove .dev tag that breaks revdeps
+	sed -i -e '/tag_build/d' setup.cfg || die
+	distutils-r1_src_prepare
+}