diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+# 0.1.0.6
+
+- Relax version bounds to ecompass `base-4.15.x`.
+
 # 0.1.0.5
 
 - Relax version bounds to encompass `nri-prelude-0.5.0.0`.
diff --git a/nri-env-parser.cabal b/nri-env-parser.cabal
--- a/nri-env-parser.cabal
+++ b/nri-env-parser.cabal
@@ -5,7 +5,7 @@
 -- see: https://github.com/sol/hpack
 
 name:           nri-env-parser
-version:        0.1.0.5
+version:        0.1.0.6
 synopsis:       Read environment variables as settings to build 12-factor apps.
 description:    Please see the README at <https://github.com/NoRedInk/haskell-libraries/tree/trunk/env-parser>.
 category:       Web
@@ -37,7 +37,7 @@
   default-extensions: DataKinds DeriveGeneric FlexibleContexts FlexibleInstances GeneralizedNewtypeDeriving MultiParamTypeClasses NamedFieldPuns NoImplicitPrelude OverloadedStrings PartialTypeSignatures ScopedTypeVariables Strict TypeOperators
   ghc-options: -Wall -Wcompat -Widentities -Wincomplete-record-updates -Wpartial-fields -Wredundant-constraints -Wincomplete-uni-patterns -fplugin=NriPrelude.Plugin
   build-depends:
-      base >=4.12.0.0 && <4.15
+      base >=4.12.0.0 && <4.16
     , modern-uri >=0.3.1.0 && <0.4
     , network-uri >=2.6.2.0 && <2.8
     , nri-prelude >=0.1.0.0 && <0.6