diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 ## Changelog for the `threepenny-gui` package
 
+**0.8.3.1** – Maintenance release
+
+* Bump dependencies for compatibility with GHC-8.8.
+* Bump dependencies to allow `hashable` 1.3.0.0.
+* Remove support for GHC 7.6 and 7.8.
+
 **0.8.3.0** – Maintenance and snapshot release
 
 * Export `keypress` event.
diff --git a/threepenny-gui.cabal b/threepenny-gui.cabal
--- a/threepenny-gui.cabal
+++ b/threepenny-gui.cabal
@@ -1,5 +1,5 @@
 Name:                threepenny-gui
-Version:             0.8.3.0
+Version:             0.8.3.1
 Synopsis:            GUI framework that uses the web browser as a display.
 Description:
     Threepenny-GUI is a GUI framework that uses the web browser as a display.
@@ -28,12 +28,12 @@
 Category:            Web, GUI
 Build-type:          Simple
 Cabal-version:       >=1.8
-Tested-With:         GHC == 7.6.3
-                    ,GHC == 7.8.4
-                    ,GHC == 7.10.3
+Tested-With:         GHC == 7.10.3
                     ,GHC == 8.0.2
                     ,GHC == 8.2.2
-                    ,GHC == 8.4.2
+                    ,GHC == 8.4.4
+                    ,GHC == 8.6.5
+                    ,GHC == 8.8.1
 
 Extra-Source-Files:  CHANGELOG.md
                     ,README.md
@@ -108,7 +108,7 @@
   if flag(rebug)
       cpp-options:  -DREBUG
       ghc-options:  -O2
-  build-depends:     base                   >= 4.6   && < 4.13
+  build-depends:     base                   >= 4.8   && < 4.14
                     ,aeson                  (>= 0.7 && < 0.10) || == 0.11.* || (>= 1.0 && < 1.5)
                     ,async                  >= 2.0   && < 2.3
                     ,bytestring             >= 0.9.2 && < 0.11
@@ -118,12 +118,12 @@
                     ,exceptions             >= 0.6   && < 0.11
                     ,filepath               >= 1.3.0 && < 1.5.0
                     ,file-embed             >= 0.0.10 && < 0.1
-                    ,hashable               >= 1.1.0 && < 1.3
+                    ,hashable               >= 1.1.0 && < 1.4
                     ,safe                   == 0.3.*
                     ,snap-server            >= 0.9.0 && < 1.2
                     ,snap-core              >= 0.9.0 && < 1.1
                     ,stm                    >= 2.2    && < 2.6
-                    ,template-haskell       >= 2.7.0  && < 2.15
+                    ,template-haskell       >= 2.7.0  && < 2.16
                     ,text                   >= 0.11   && < 1.3
                     ,transformers           >= 0.3.0  && < 0.6
                     ,unordered-containers   == 0.2.*