diff --git a/lightstep-haskell.cabal b/lightstep-haskell.cabal
--- a/lightstep-haskell.cabal
+++ b/lightstep-haskell.cabal
@@ -1,7 +1,7 @@
 cabal-version: 2.4
 
 name:           lightstep-haskell
-version:        0.10.0
+version:        0.10.1
 synopsis:       LightStep OpenTracing client library
 description:    LightStep OpenTracing client library. Uses GRPC transport via proto-lens.
 category:       Tools
diff --git a/src/LightStep/HighLevel/IO.hs b/src/LightStep/HighLevel/IO.hs
--- a/src/LightStep/HighLevel/IO.hs
+++ b/src/LightStep/HighLevel/IO.hs
@@ -81,6 +81,7 @@
               sp
                 & references .~ [defMessage & relationship .~ Reference'CHILD_OF & spanContext .~ (psp ^. spanContext)]
                 & spanContext . traceId .~ (psp ^. spanContext . traceId)
+                & tags .~ [(defMessage & key .~ k & stringValue .~ v) | (k, v) <- initialTags]
          in pure $! HM.update (Just . (sp' :)) tId stacks
 
 popSpan :: MonadIO m => () -> m ()