2 files changed, 2 insertions, 2 deletions

diff --git a/requirements.txt b/requirements.txt
index 05db063..afa868d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-backports.csv==1.0.6
+backports.csv==1.0.6; python_version < '3.0'
 certifi==2017.7.27.1
 chardet==3.0.4
 et-xmlfile==1.0.1
diff --git a/setup.py b/setup.py
index 7b93754..4e65dd2 100755
--- a/setup.py
+++ b/setup.py
@@ -35,7 +35,7 @@ packages = [
 install = [
     'odfpy',
     'openpyxl>=2.4.0',
-    'backports.csv',
+    'backports.csv;python_version<"3.0"',
     'xlrd',
     'xlwt',
     'pyyaml',