diff --git a/pipes-http.cabal b/pipes-http.cabal
index c46657a..66ce5e1 100644
--- a/pipes-http.cabal
+++ b/pipes-http.cabal
@@ -20,7 +20,7 @@ Library
     HS-Source-Dirs: src
     Build-Depends:
         base             >= 4       && < 5   ,
-        bytestring       >= 0.9.2.1 && < 0.11,
+        bytestring       >= 0.9.2.1 && < 0.12,
         pipes            >= 4.0     && < 4.4 ,
         http-client      >= 0.2     && < 0.8 ,
         http-client-tls                < 0.4
diff --git a/stack.yaml b/stack.yaml
index a43da4b..ece78ab 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -1 +1 @@
-resolver: lts-7.14
+resolver: lts-20.3