The minimum supported API version is now 1.21 (Engine version 1.9.0+)

NEWS

@@ -20,7 +20,7 @@ Bugs corrected:
 
 Backward-incompatible changes:
 
-    * Support for Docker API < 2.0 is deprecated (Docker plugins)
+    * Minimum supported Docker API version is now 1.21 (Docker plugins)
     * Support for InfluxDB < 0.9 is deprecated (InfluxDB exporter)
 
 News command line options:

optional-requirements.txt

@@ -2,7 +2,7 @@ bernhard
 bottle
 cassandra-driver
 couchdb
-docker
+docker>=2.0.0
 elasticsearch
 influxdb
 kafka-python