diff --git a/Changelog.md b/Changelog.md
--- a/Changelog.md
+++ b/Changelog.md
@@ -1,3 +1,6 @@
+# 0.2.1.0
+* add naive stderr interpreters for `DataLog` and `Log`.
+
 # 0.2.0.0
 
 * `DataLog` got a second constructor, `Local`. It takes a higher-order `Sem` and a transformation function, the latter
diff --git a/lib/Polysemy/Log/Format.hs b/lib/Polysemy/Log/Format.hs
--- a/lib/Polysemy/Log/Format.hs
+++ b/lib/Polysemy/Log/Format.hs
@@ -41,7 +41,7 @@
   maybe "<unknown loc>" format . listToMaybe . getCallStack
   where
     format (_, SrcLoc {..}) =
-      [qt|#{shortModule (toText srcLocModule)}##{srcLocStartLine}|]
+      [qt|#{shortModule (toText srcLocModule)}\##{srcLocStartLine}|]
 
 -- |Default formatter for the default message type.
 formatLogEntry :: LogEntry LogMessage -> Text
diff --git a/polysemy-log.cabal b/polysemy-log.cabal
--- a/polysemy-log.cabal
+++ b/polysemy-log.cabal
@@ -5,7 +5,7 @@
 -- see: https://github.com/sol/hpack
 
 name:           polysemy-log
-version:        0.2.1.0
+version:        0.2.2.0
 synopsis:       Polysemy effects for logging
 description:    See <https://hackage.haskell.org/package/polysemy-log/docs/Polysemy-Log.html>
 category:       Logging
@@ -108,14 +108,11 @@
   ghc-options: -flate-specialise -fspecialise-aggressively -Wall -Wredundant-constraints
   build-depends:
       ansi-terminal >=0.10.0 && <0.11
-    , async
     , base ==4.*
     , polysemy >=1.3 && <1.6
     , polysemy-conc >=0.1.0.0 && <0.2
     , polysemy-time >=0.1.1.0 && <0.2
     , relude >=0.5 && <0.8
-    , stm
-    , stm-chans
     , string-interpolate >=0.2.1
     , template-haskell
     , text
@@ -197,7 +194,6 @@
   ghc-options: -flate-specialise -fspecialise-aggressively -Wall -Wredundant-constraints -threaded -rtsopts -with-rtsopts=-N
   build-depends:
       ansi-terminal >=0.10.0 && <0.11
-    , async
     , base ==4.*
     , hedgehog
     , polysemy >=1.3 && <1.6
@@ -206,8 +202,6 @@
     , polysemy-test
     , polysemy-time >=0.1.1.0 && <0.2
     , relude >=0.5 && <0.8
-    , stm
-    , stm-chans
     , string-interpolate >=0.2.1
     , tasty
     , tasty-hedgehog