diff --git a/lib/maintainers.nix b/lib/maintainers.nix
index 24b87a5f36a0..ec15ab5910f7 100644
--- a/lib/maintainers.nix
+++ b/lib/maintainers.nix
@@ -12,6 +12,7 @@
   abbradar = "Nikolay Amiantov <ab@fmap.me>";
   aboseley = "Adam Boseley <adam.boseley@gmail.com>";
   abuibrahim = "Ruslan Babayev <ruslan@babayev.com>";
+  acowley = "Anthony Cowley <acowley@gmail.com>";
   adev = "Adrien Devresse <adev@adev.name>";
   Adjective-Object = "Maxwell Huang-Hobbs <mhuan13@gmail.com>";
   adnelson = "Allen Nelson <ithinkican@gmail.com>";
diff --git a/pkgs/applications/science/logic/redprl/default.nix b/pkgs/applications/science/logic/redprl/default.nix
new file mode 100644
index 000000000000..1df3fa940f94
--- /dev/null
+++ b/pkgs/applications/science/logic/redprl/default.nix
@@ -0,0 +1,26 @@
+{ stdenv, fetchgit, mlton }:
+stdenv.mkDerivation {
+  name = "redprl-2016-09-22";
+  src = fetchgit {
+    url = "https://github.com/RedPRL/sml-redprl.git";
+    rev = "3215faf0d494f4ac14d6e10172329a161df192c4";
+    sha256 = "0pcq4q9xy34j7ziwbly4qxccpkcrl92r9y11bv6hdkbzwm1g2a77";
+    fetchSubmodules = true;
+  };
+  buildInputs = [ mlton ];
+  builder = builtins.toFile "builder.sh" ''
+    source $stdenv/setup
+    mkdir -p $out/bin
+    cp -r $src/* .
+    chmod -R +w src
+    ./script/mlton.sh
+    mv ./bin/redprl $out/bin
+  '';
+  meta = {
+    description = "A proof assistant for Nominal Computational Type Theory";
+    homepage = "http://www.redprl.org/";
+    license = stdenv.lib.licenses.mit;
+    maintainers = [ stdenv.lib.maintainers.acowley ];
+    platforms = stdenv.lib.platforms.unix;
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 63b6834ba808..07002c45c7cd 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -17623,6 +17623,8 @@ in
 
   putty = callPackage ../applications/networking/remote/putty { };
 
+  redprl = callPackage ../applications/science/logic/redprl { };
+
   retroarchBare = callPackage ../misc/emulators/retroarch { };
 
   retroarch = wrapRetroArch { retroarch = retroarchBare; };