diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+# 0.1.0.1
+
+- Relax version bounds to ecompass `base-4.15.x`.
+
 # 0.1.0.0
 
 - Initial release.
diff --git a/nri-observability.cabal b/nri-observability.cabal
--- a/nri-observability.cabal
+++ b/nri-observability.cabal
@@ -5,7 +5,7 @@
 -- see: https://github.com/sol/hpack
 
 name:           nri-observability
-version:        0.1.0.0
+version:        0.1.0.1
 synopsis:       Report log spans collected by nri-prelude.
 description:    Please see the README at <https://github.com/NoRedInk/haskell-libraries/tree/trunk/observability>.
 category:       Web
@@ -50,7 +50,7 @@
       aeson >=1.4.6.0 && <1.6
     , aeson-pretty >=0.8.0 && <0.9
     , async >=2.2.2 && <2.3
-    , base >=4.12.0.0 && <4.15
+    , base >=4.12.0.0 && <4.16
     , bugsnag-hs >=0.1.0.0 && <0.3
     , bytestring >=0.10.8.2 && <0.12
     , directory >=1.3.3.0 && <1.4
@@ -96,7 +96,7 @@
       aeson >=1.4.6.0 && <1.6
     , aeson-pretty >=0.8.0 && <0.9
     , async >=2.2.2 && <2.3
-    , base >=4.12.0.0 && <4.15
+    , base >=4.12.0.0 && <4.16
     , bugsnag-hs >=0.1.0.0 && <0.3
     , bytestring >=0.10.8.2 && <0.12
     , directory >=1.3.3.0 && <1.4