diff --git a/CHANGELOG b/CHANGELOG
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,5 +1,8 @@
 # Changelog
 
+- 0.8.2.5 (2020-04-20)
+    * Bump `base` upper bound to 4.15
+
 - 0.8.2.4 (2020-03-29)
     * Bump `QuickCheck` upper bound to 2.15
 
diff --git a/blaze-markup.cabal b/blaze-markup.cabal
--- a/blaze-markup.cabal
+++ b/blaze-markup.cabal
@@ -1,5 +1,5 @@
 Name:         blaze-markup
-Version:      0.8.2.4
+Version:      0.8.2.5
 Homepage:     http://jaspervdj.be/blaze
 Bug-Reports:  http://github.com/jaspervdj/blaze-markup/issues
 License:      BSD3
@@ -18,8 +18,8 @@
 Build-type:    Simple
 Cabal-version: >= 1.8
 Tested-with:   GHC == 7.8.4, GHC == 7.10.3,
-               GHC == 8.0.2, GHC == 8.2.2, GHC == 8.4.1,
-               GHC == 8.6.3, GHC == 8.8.1
+               GHC == 8.0.2, GHC == 8.2.2, GHC == 8.4.4,
+               GHC == 8.6.5, GHC == 8.8.3, GHC == 8.10.1
 
 Extra-source-files:
   CHANGELOG
@@ -37,7 +37,7 @@
     Text.Blaze.Renderer.Utf8
 
   Build-depends:
-    base          >= 4    && < 4.14,
+    base          >= 4    && < 4.15,
     blaze-builder >= 0.3  && < 0.5,
     text          >= 0.10 && < 1.3,
     bytestring    >= 0.9  && < 0.11
@@ -66,7 +66,7 @@
     tasty-hunit      >= 0.10 && < 0.11,
     tasty-quickcheck >= 0.10 && < 0.11,
     -- Copied from regular dependencies...
-    base          >= 4    && < 4.14,
+    base          >= 4    && < 4.15,
     blaze-builder >= 0.3  && < 0.5,
     text          >= 0.10 && < 1.3,
     bytestring    >= 0.9  && < 0.11