diff --git a/requirements-dev.txt b/requirements-dev.txt
index d2e70ba89..a75fdcfb5 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -5,6 +5,8 @@ sure>=1.2.24
 coverage
 freezegun
 flask
-boto3>=1.2.3
-botocore>=1.3.26
-six
\ No newline at end of file
+# botocore 1.3.29 breaks s3 in tests (lambda and s3 tests)
+# so we need to pin a boto3 and botocore revision pair that we know works
+boto3==1.2.4
+botocore==1.3.28
+six