diff --git a/changelog.md b/changelog.md
--- a/changelog.md
+++ b/changelog.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## 0.15.1 - 12.09.2020
+
+relaxed upper boundary of `megaparsec` up to 10.0.0
+
 ## 0.15.0 - 12.09.2020
 
 ### new features
diff --git a/morpheus-graphql-core.cabal b/morpheus-graphql-core.cabal
--- a/morpheus-graphql-core.cabal
+++ b/morpheus-graphql-core.cabal
@@ -4,10 +4,10 @@
 --
 -- see: https://github.com/sol/hpack
 --
--- hash: 7aaaf3d4b4dab94a5938e6284d262fadabee300b225a623e93fa0d703192a48f
+-- hash: ce18cb316044bb79be32544a1626da5772a8ed0cc0d17214179d77c1d9c6f8f4
 
 name:           morpheus-graphql-core
-version:        0.15.0
+version:        0.15.1
 synopsis:       Morpheus GraphQL Core
 description:    Build GraphQL APIs with your favourite functional language!
 category:       web, graphql
@@ -225,7 +225,7 @@
     , base >=4.7 && <5
     , bytestring >=0.10.4 && <0.11
     , hashable >=1.0.0
-    , megaparsec >=7.0.0 && <9.0.0
+    , megaparsec >=7.0.0 && <10.0.0
     , mtl >=2.0 && <=3.0
     , scientific >=0.3.6.2 && <0.4
     , template-haskell >=2.0 && <=3.0
@@ -254,7 +254,7 @@
     , bytestring >=0.10.4 && <0.11
     , directory >=1.0
     , hashable >=1.0.0
-    , megaparsec >=7.0.0 && <9.0.0
+    , megaparsec >=7.0.0 && <10.0.0
     , morpheus-graphql-core
     , mtl >=2.0 && <=3.0
     , scientific >=0.3.6.2 && <0.4