diff --git a/LICENSE.markdown b/LICENSE.markdown
--- a/LICENSE.markdown
+++ b/LICENSE.markdown
@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2018 Taylor Fausak
+Copyright (c) 2020 Taylor Fausak
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/package.yaml b/package.yaml
--- a/package.yaml
+++ b/package.yaml
@@ -1,5 +1,5 @@
 name: salve
-version: 1.0.8
+version: 1.0.9
 
 category: Distribution
 description:
@@ -16,7 +16,7 @@
 synopsis: Semantic version numbers and constraints.
 
 dependencies:
-  base: '>= 4.9.0 && < 4.14'
+  base: '>= 4.9.0 && < 4.15'
 ghc-options:
   - -Weverything
   - -Wno-implicit-prelude
diff --git a/salve.cabal b/salve.cabal
--- a/salve.cabal
+++ b/salve.cabal
@@ -1,13 +1,13 @@
 cabal-version: 1.12
 
--- This file has been generated from package.yaml by hpack version 0.31.0.
+-- This file has been generated from package.yaml by hpack version 0.33.0.
 --
 -- see: https://github.com/sol/hpack
 --
--- hash: 019bfde4256d781b68fa896b714bcb5005f6dfe16f62471950ec84239ddf6c75
+-- hash: 819ccef7644498bebc5302d80b59de266c93ebf52b3037e2d7f3f3433db20512
 
 name:           salve
-version:        1.0.8
+version:        1.0.9
 synopsis:       Semantic version numbers and constraints.
 description:    Salve provides semantic version (SemVer) numbers and constraints (ranges).
 category:       Distribution
@@ -37,7 +37,7 @@
       library
   ghc-options: -Weverything -Wno-implicit-prelude -Wno-safe -Wno-unsafe
   build-depends:
-      base >=4.9.0 && <4.14
+      base >=4.9.0 && <4.15
   if impl(ghc >= 8.8.1)
     ghc-options: -Wno-missing-deriving-strategies
   default-language: Haskell2010
@@ -51,7 +51,7 @@
       tests
   ghc-options: -Weverything -Wno-implicit-prelude -Wno-safe -Wno-unsafe -rtsopts -threaded
   build-depends:
-      base >=4.9.0 && <4.14
+      base >=4.9.0 && <4.15
     , doctest >=0.11.0 && <0.17
   if impl(ghc >= 8.8.1)
     ghc-options: -Wno-missing-deriving-strategies
diff --git a/stack.yaml b/stack.yaml
--- a/stack.yaml
+++ b/stack.yaml
@@ -1,1 +1,1 @@
-resolver: lts-13.0
+resolver: lts-15.4