diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index a83a7f09c3c..ec3d1ae7df5 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -9556,10 +9556,6 @@ let
       click configobj prompt_toolkit psycopg2 pygments sqlparse
     ];
 
-    postPatch = ''
-      substituteInPlace setup.py --replace "==" ">="
-    '';
-
     meta = {
       inherit version;
       description = "Command-line interface for PostgreSQL";
@@ -9575,17 +9571,17 @@ let
 
   mycli = buildPythonPackage rec {
     name = "mycli-${version}";
-    version = "1.3.0";
+    version = "1.4.0";
 
     src = pkgs.fetchFromGitHub {
-      sha256 = "109jz84m29v4fjhk2ngsfc1b6zw4w6dbjlr2izvib63ylcz7b5nh";
+      sha256 = "175jcfixjkq17fbda9kifbljfd5iwjpjisvhs5xhxsyf6n5ykv2l";
       rev = "v${version}";
       repo = "mycli";
       owner = "dbcli";
     };
 
     propagatedBuildInputs = with self; [
-      pymysql configobj sqlparse prompt_toolkit0_45 pygments click
+      pymysql configobj sqlparse prompt_toolkit pygments click
     ];
 
     meta = {
@@ -9917,36 +9913,10 @@ let
 
   prompt_toolkit = buildPythonPackage rec {
     name = "prompt_toolkit-${version}";
-    version = "0.47";
+    version = "0.46";
 
     src = pkgs.fetchurl {
-      sha256 = "1xkrbz7d2mzd5r5a8aqbnhym57fkpri9x73cql5vb573glzwddla";
-      url = "https://pypi.python.org/packages/source/p/prompt_toolkit/${name}.tar.gz";
-    };
-
-    buildInputs = with self; [ jedi ipython pygments ];
-    propagatedBuildInputs = with self; [ docopt six wcwidth ];
-
-    meta = {
-      description = "Python library for building powerful interactive command lines";
-      longDescription = ''
-        prompt_toolkit could be a replacement for readline, but it can be
-        much more than that. It is cross-platform, everything that you build
-        with it should run fine on both Unix and Windows systems. Also ships
-        with a nice interactive Python shell (called ptpython) built on top.
-      '';
-      homepage = https://github.com/jonathanslenders/python-prompt-toolkit;
-      license = licenses.bsd3;
-      maintainers = with maintainers; [ nckx ];
-    };
-  };
-
-  prompt_toolkit0_45 = buildPythonPackage rec {
-    name = "prompt_toolkit-${version}";
-    version = "0.45";
-
-    src = pkgs.fetchurl {
-      sha256 = "19lp15rc0rq4jqaacg2a38cdgfy2avhf5v97yanasx4n2swx4gsm";
+      sha256 = "1yq9nis1b2rgpndi2rqh4divf6j22jjva83r5z8jf7iffywmr8hs";
       url = "https://pypi.python.org/packages/source/p/prompt_toolkit/${name}.tar.gz";
     };