diff --git a/JuicyPixels.cabal b/JuicyPixels.cabal
--- a/JuicyPixels.cabal
+++ b/JuicyPixels.cabal
@@ -1,5 +1,5 @@
 Name:                JuicyPixels
-Version:             3.2.9.3
+Version:             3.2.9.4
 Synopsis:            Picture loading/serialization (in png, jpeg, bitmap, gif, tga, tiff and radiance)
 Description:
     <<data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAMAAAADABAMAAACg8nE0AAAAElBMVEUAAABJqDSTWEL/qyb///8AAABH/1GTAAAAAXRSTlMAQObYZgAAAN5JREFUeF7s1sEJgFAQxFBbsAV72v5bEVYWPwT/XDxmCsi7zvHXavYREBDI3XP2GgICqBBYuwIC+/rVayPUAyAg0HvIXBcQoDFDGnUBgWQQ2Bx3AYFaRoBpAQHWb3bt2ARgGAiCYFFuwf3X5HA/McgGJWI2FdykCv4aBYzmKwDwvl6NVmUAAK2vlwEALK7fo88GANB6HQsAAAAAAAAA7P94AQCzswEAAAAAAAAAAAAAAAAAAICzh4UAO4zWAYBfRutHA4Bn5C69JhowAMGoBaMWDG0wCkbBKBgFo2AUAACPmegUST/IJAAAAABJRU5ErkJggg==>>
@@ -28,7 +28,7 @@
 Source-Repository this
     Type:      git
     Location:  git://github.com/Twinside/Juicy.Pixels.git
-    Tag:       v3.2.9.3
+    Tag:       v3.2.9.4
 
 Flag Mmap
     Description: Enable the file loading via mmap (memory map)
diff --git a/changelog b/changelog
--- a/changelog
+++ b/changelog
@@ -1,6 +1,14 @@
 Change log
 ==========
 
+v3.2.9.4 Januear 2018
+----------------------
+
+ * Compat for GHC-8.4 (pull request)
+ * Fix: a character in latin1 which was still around. Whatever.
+        So tired of this.
+
+
 v3.2.9.3 December 2017
 ----------------------
 
diff --git a/src/Codec/Picture/Jpg/Progressive.hs b/src/Codec/Picture/Jpg/Progressive.hs
--- a/src/Codec/Picture/Jpg/Progressive.hs
+++ b/src/Codec/Picture/Jpg/Progressive.hs
@@ -40,7 +40,7 @@
 
         -- if the displayed MCU block is only displayed in half (like with
         -- width 500 then we loose one macroblock of the MCU at the end of
-        -- the line. Previous implementation which naïvely used full mcu
+        -- the line. Previous implementation which naively used full mcu
         -- was wrong. Only taking into account visible macroblocks
         indexSolo = [base + x
             | y <- [0 .. compH - 1]
diff --git a/src/Codec/Picture/Metadata.hs b/src/Codec/Picture/Metadata.hs
--- a/src/Codec/Picture/Metadata.hs
+++ b/src/Codec/Picture/Metadata.hs
@@ -171,7 +171,12 @@
 
 instance Monoid Metadatas where
   mempty = empty
+#if !MIN_VERSION_base(4,11,0)
   mappend = union
+#else
+instance Semigroup Metadatas where
+  (<>) = union
+#endif
 
 -- | Right based union
 union :: Metadatas -> Metadatas -> Metadatas
