diff --git a/README.md b/README.md
index 39fd4f68..10945ded 100644
--- a/README.md
+++ b/README.md
@@ -183,7 +183,7 @@ If you have the `nix` package manager installed, you can create an IHaskell
 notebook environment with one command. For example:
 
 ```bash
-$ nix-build -I nixpkgs=https://github.com/NixOS/nixpkgs-channels/archive/nixos-18.09.tar.gz release-8.4.nix --arg packages "haskellPackages: [ haskellPackages.lens ]"
+$ nix-build -I nixpkgs=https://github.com/NixOS/nixpkgs-channels/archive/nixos-19.03.tar.gz release-8.6.nix --arg packages "haskellPackages: [ haskellPackages.lens ]"
 <result path>
 $ <result path>/bin/ihaskell-notebook
 ```
@@ -193,9 +193,11 @@ It might take a while the first time, but subsequent builds will be much faster.
 The IHaskell display modules are not loaded by default and have to be specified as additional packages:
 
 ```bash
-$ nix-build -I nixpkgs=https://github.com/NixOS/nixpkgs-channels/archive/nixos-18.09.tar.gz release-8.4.nix --arg packages "haskellPackages: [ haskellPackages.ihaskell-blaze haskellPackages.ihaskell-charts ]"
+$ NIXPKGS_ALLOW_BROKEN=1 nix-build -I nixpkgs=https://github.com/NixOS/nixpkgs-channels/archive/nixos-19.03.tar.gz release-8.4.nix --arg packages "haskellPackages: [ haskellPackages.ihaskell-blaze haskellPackages.ihaskell-charts ]"
 ```
 
+We use GHC 8.4 here because not all dependencies have been updated to support GHC 8.6 yet.
+
 # Troubleshooting
 
 ## Where are my packages? (IHaskell + Stack)
diff --git a/release.nix b/release.nix
index 3f792050..a4dc1560 100644
--- a/release.nix
+++ b/release.nix
@@ -51,6 +51,8 @@ let
       inline-r          = nixpkgs.haskell.lib.dontCheck super.inline-r;
       static-canvas     = nixpkgs.haskell.lib.doJailbreak super.static-canvas;
       system-fileio     = nixpkgs.haskell.lib.doJailbreak super.system-fileio;
+      Chart             = nixpkgs.haskell.lib.doJailbreak super.Chart;
+      Chart-cairo       = nixpkgs.haskell.lib.doJailbreak super.Chart-cairo;
     } // displays self);
   });
   ihaskellEnv = haskellPackages.ghcWithPackages (self: [ self.ihaskell ] ++ packages self);