diff --git a/package.yaml b/package.yaml
--- a/package.yaml
+++ b/package.yaml
@@ -1,5 +1,5 @@
 name: require
-version: '0.4.0'
+version: '0.4.1'
 github: "theam/require"
 license: Apache-2.0
 author: "The Agile Monkeys"
@@ -32,7 +32,7 @@
   - universum >= 1.2.0 && < 2
   - bytestring >= 0.10 && < 0.11
   - text >= 1.2.3.0 && < 2
-  - megaparsec >= 6.5.0 && < 7
+  - megaparsec >= 7 && < 8
   - directory
   - inliterate
   - optparse-generic
diff --git a/require.cabal b/require.cabal
--- a/require.cabal
+++ b/require.cabal
@@ -2,10 +2,10 @@
 --
 -- see: https://github.com/sol/hpack
 --
--- hash: 8f222d0ce5d76ff45c88779da37cb9591e547d814faa2c17ac9f171f536c61d6
+-- hash: 594ca7f466defab634bcc5a8afa821a67a437a703efe1537dda645ad6086c2f9
 
 name:           require
-version:        0.4.0
+version:        0.4.1
 synopsis:       Scrap your qualified import clutter
 description:    See <https://theam.github.io/require>
 category:       Other
@@ -44,7 +44,7 @@
     , bytestring >=0.10 && <0.11
     , directory
     , inliterate
-    , megaparsec >=6.5.0 && <7
+    , megaparsec >=7 && <8
     , optparse-generic
     , text >=1.2.3.0 && <2
     , universum >=1.2.0 && <2
@@ -63,7 +63,7 @@
     , bytestring >=0.10 && <0.11
     , directory
     , inliterate
-    , megaparsec >=6.5.0 && <7
+    , megaparsec >=7 && <8
     , optparse-generic
     , require
     , text >=1.2.3.0 && <2
@@ -83,7 +83,7 @@
     , bytestring >=0.10 && <0.11
     , directory
     , inliterate
-    , megaparsec >=6.5.0 && <7
+    , megaparsec >=7 && <8
     , optparse-generic
     , require
     , text >=1.2.3.0 && <2
@@ -105,7 +105,7 @@
     , bytestring >=0.10 && <0.11
     , directory
     , inliterate
-    , megaparsec >=6.5.0 && <7
+    , megaparsec >=7 && <8
     , optparse-generic
     , require
     , tasty
@@ -129,7 +129,7 @@
     , criterion
     , directory
     , inliterate
-    , megaparsec >=6.5.0 && <7
+    , megaparsec >=7 && <8
     , optparse-generic
     , require
     , text >=1.2.3.0 && <2
diff --git a/stack.yaml b/stack.yaml
--- a/stack.yaml
+++ b/stack.yaml
@@ -15,7 +15,7 @@
 # resolver:
 #  name: custom-snapshot
 #  location: "./custom-snapshot.yaml"
-resolver: nightly-2018-05-23
+resolver: lts-13.3
 
 # User packages to be built.
 # Various formats can be used as shown in the example below.