diff --git a/default.nix b/default.nix
index 16f006e7131..9513c84473e 100644
--- a/default.nix
+++ b/default.nix
@@ -16,7 +16,7 @@ let
 
   pinnedPkgs =
     builtins.fetchTarball {
-      url = "https://github.com/nixos/nixpkgs/archive/${nixpkgsVersion.rev}.tar.gz";
+      url = "https://github.com/monacoremo/nixpkgs/archive/${nixpkgsVersion.rev}.tar.gz";
       sha256 = nixpkgsVersion.tarballHash;
     };
 
@@ -48,8 +48,7 @@ let
   drvStatic =
     import nix/static {
       inherit pkgs name src;
-      # Currently only works with GHC 8.6.5.
-      compiler = "ghc865";
+      compiler = "ghc883";
     };
 
   lib =
diff --git a/nix/nixpkgs-version.nix b/nix/nixpkgs-version.nix
index affe8a1960b..5f9d611015c 100644
--- a/nix/nixpkgs-version.nix
+++ b/nix/nixpkgs-version.nix
@@ -1,6 +1,6 @@
-# Pinned version of Nixpkgs, generated with nixpkgs-upgrade.
+# Nixpkgs-unstable + https://github.com/monacoremo/nixpkgs/commit/93cc144b215654ca9cb0d2bcb58bb8922895ccab
 {
-  date = "2020-04-23";
-  rev = "10100a97c8964e82b30f180fda41ade8e6f69e41";
-  tarballHash = "011f36kr3c1ria7rag7px26bh73d1b0xpqadd149bysf4hg17rln";
+  date = "2020-04-25";
+  rev = "93cc144b215654ca9cb0d2bcb58bb8922895ccab";
+  tarballHash = "1b2p07vx8bjvw697wg8awdb1f9j0a6zq213inyqkcdj68qxx896b";
 }
diff --git a/nix/static/default.nix b/nix/static/default.nix
index 7d350a7871f..1d086c1f9bb 100644
--- a/nix/static/default.nix
+++ b/nix/static/default.nix
@@ -30,11 +30,14 @@ let
               # Add our source package.
               "${name}" = prev.callCabal2nix name src {};
 
-              # cabal2nix depends on Cabal 3.0.*, while our pinned version of Nixpkgs 
+              # cabal2nix depends on Cabal 3.0.*, while our pinned version of Nixpkgs
               # only provides 2.4 or 3.2. So we pinned 3.0.0.0 in ./Cabal.nix
               cabal2nix =
-                prev.cabal2nix.overrideScope 
-                  (self: super: { Cabal = self.callPackage ./Cabal.nix {}; });
+                prev.cabal2nix.overrideScope
+                (self: super: { Cabal = self.callPackage ./Cabal.nix {}; });
+
+              protolude =
+                prev.callPackage ../overlays/haskell-packages/protolude.nix {};
 
               # The tests for the packages below took a long time on static
               # builds, so we disable them for now - to be investigated.
@@ -57,11 +60,15 @@ let
   normalPkgs =
     pkgs.appendOverlays [ overlay ];
 
+  defaultCabalPackageVersionComingWithGhc =
+    "Cabal_3_2_0_0";
+
   # Let the static-haskell-nix project do the hard work of deriving a set of
   # fully static Haskell executables, including one for the our source package
   # that we added through the overlay.
   survey =
-    import "${static-haskell-nix}/survey" { inherit normalPkgs compiler; };
+    import "${static-haskell-nix}/survey"
+      { inherit normalPkgs compiler defaultCabalPackageVersionComingWithGhc; };
 in
   # Return the fully static derivation of our source package.
 survey.haskellPackages."${name}"