diff --git a/setup.cfg b/setup.cfg
index 00ba8ce..f640ff9 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -27,14 +27,14 @@ classifiers =
 
 [options]
 python_requires = >=3.6
-packages = pyapp_ext.boto3
+packages = pyapp_ext.boto3==1.10.34
 test_suite = tests
 setup_requires =
-    pytest-runner
+    pytest-runner==5.2
     setuptools >=38.3
 install_requires =
     pyapp >=4.0b4
-    boto3
+    boto3==1.10.34
 tests_require =
     mock
     pytest
@@ -46,8 +46,8 @@ pyapp.extensions =
 
 [options.extras_require]
 dev =
-	docutils
-	black
+	docutils==0.15.2
+	black==19.10b0
 
 [aliases]
 test = pytest