diff --git a/requirements.txt b/requirements.txt
index 0a79c04..62ee562 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,18 +13,18 @@ idna~=2.8
 more-itertools~=7.0.0
 pathlib~=1.0.1
 pathtools~=0.1.2
-pip~=19.0.3
+pip==19.1
 pluggy~=0.9.0
 py~=1.8.0
 pycodestyle~=2.5.0
-pytest~=4.4.0
+pytest==4.4.1
 pytest-cov~=2.6.1
 pytest-watch~=4.2.0
 pyyaml>=4.2b1
 requests~=2.21.0
-setuptools~=40.8.0
+setuptools==41.0.1
 six~=1.12.0
-urllib3~=1.24.1
+urllib3==1.25.2
 watchdog~=0.9.0
 wheel~=0.33.1