diff --git a/honeycomb.cabal b/honeycomb.cabal
--- a/honeycomb.cabal
+++ b/honeycomb.cabal
@@ -4,10 +4,10 @@
 --
 -- see: https://github.com/sol/hpack
 --
--- hash: 14f9953f98d9687fa9bfcdfd40999758cad395a278f601b9c6ca6c9c0eb9f41f
+-- hash: 71e86a9d866e470b3be18e84cf0f065d7cd0e6d870980972dc38f8eb2488fd6a
 
 name:           honeycomb
-version:        0.0.0.2
+version:        0.0.0.3
 description:    Please see the README on GitHub at <https://github.com/githubuser/honeycomb#readme>
 homepage:       https://github.com/iand675/hs-honeycomb#readme
 bug-reports:    https://github.com/iand675/hs-honeycomb/issues
diff --git a/src/Honeycomb/API/Events.hs b/src/Honeycomb/API/Events.hs
--- a/src/Honeycomb/API/Events.hs
+++ b/src/Honeycomb/API/Events.hs
@@ -52,7 +52,7 @@
 sendEvent e = do
   client <- asks (view honeycombClientL)
   let ds = client ^. configL . to defaultDataset
-  r <- post httpLBS ["1", "events", "ds"] hs $ eventData e
+  r <- post httpLBS ["1", "events", fromDatasetName ds] hs $ eventData e
   case (statusCode $ getResponseStatus r, getResponseBody r) of
     (400, "unknown API key - check your credentials") -> throw UnknownApiKey
     (400, "request body is too large") -> throw RequestBodyTooLarge
@@ -94,7 +94,7 @@
 sendBatchedEvents' _ events = do
   config <- asks (view (honeycombClientL . configL))
   let ds = defaultDataset config
-  r <- post httpLBS ["1", "batch", "ds"] [] events
+  r <- post httpLBS ["1", "batch", fromDatasetName ds] [] events
   case getResponseBody $ decodeJSON r of
     Left err -> throw $ MalformedJSONResponse err (getResponseBody r)
     Right ok -> pure ok
diff --git a/src/Honeycomb/API/Markers.hs b/src/Honeycomb/API/Markers.hs
--- a/src/Honeycomb/API/Markers.hs
+++ b/src/Honeycomb/API/Markers.hs
@@ -81,7 +81,7 @@
 createMarker m = do
   c <- asks (view honeycombClientL)
   let ds = fromDatasetName $ defaultDataset $ clientConfig c
-  getResponseBody <$> post httpJSON ["1", "markers", "ds"] [] m
+  getResponseBody <$> post httpJSON ["1", "markers", ds] [] m
 -- updateMarker :: Client -> Marker
 -- deleteMarker :: Client -> Marker
 -- listAllMarkers :: Client -> Marker