diff --git a/pkgs/applications/office/watson/default.nix b/pkgs/applications/office/watson/default.nix
index b6e318ec0833..b212ae05a9d2 100644
--- a/pkgs/applications/office/watson/default.nix
+++ b/pkgs/applications/office/watson/default.nix
@@ -19,7 +19,7 @@ buildPythonApplication rec {
   '';
 
   checkInputs = [ pytestCheckHook pytest-mock mock pytest-datafiles ];
-  propagatedBuildInputs = [ arrow_1 click click-didyoumean requests ];
+  propagatedBuildInputs = [ arrow click click-didyoumean requests ];
   nativeBuildInputs = [ installShellFiles ];
 
   meta = with lib; {
diff --git a/pkgs/development/python-modules/arrow/1.nix b/pkgs/development/python-modules/arrow/1.nix
deleted file mode 100644
index f9b830762b30..000000000000
--- a/pkgs/development/python-modules/arrow/1.nix
+++ /dev/null
@@ -1,41 +0,0 @@
-{ lib, buildPythonPackage, fetchPypi, pythonOlder
-, simplejson, typing-extensions, python-dateutil, pytz, pytest-mock, sphinx
-, dateparser, pytestcov, pytestCheckHook
-}:
-
-buildPythonPackage rec {
-  pname = "arrow";
-  version = "1.0.3";
-
-  disabled = pythonOlder "3.6";
-
-  src = fetchPypi {
-    inherit pname version;
-    sha256 = "0793badh4hgbk2c5g70hmbl7n3d4g5d87bcflld0w9rjwy59r71r";
-  };
-
-  propagatedBuildInputs = [ python-dateutil ]
-    ++ lib.optionals (!pythonOlder "3.8") [ typing-extensions ];
-
-  checkInputs = [
-    dateparser
-    pytestCheckHook
-    pytestcov
-    pytest-mock
-    pytz
-    simplejson
-    sphinx
-  ];
-
-  # ParserError: Could not parse timezone expression "America/Nuuk"
-  disabledTests = [
-    "test_parse_tz_name_zzz"
-  ];
-
-  meta = with lib; {
-    description = "Python library for date manipulation";
-    homepage = "https://github.com/crsmithdev/arrow";
-    license = licenses.asl20;
-    maintainers = with maintainers; [ thoughtpolice oxzi ];
-  };
-}
diff --git a/pkgs/development/python-modules/arrow/default.nix b/pkgs/development/python-modules/arrow/default.nix
index 93347d7a4b4b..159ef917f521 100644
--- a/pkgs/development/python-modules/arrow/default.nix
+++ b/pkgs/development/python-modules/arrow/default.nix
@@ -1,29 +1,39 @@
-{ lib, buildPythonPackage, fetchPypi, isPy27
-, nose, chai, simplejson, backports_functools_lru_cache
-, python-dateutil, pytz, pytest-mock, sphinx, dateparser, pytestcov
+{ lib
+, buildPythonPackage
+, fetchPypi
+, pythonOlder
+, python-dateutil
+, typing-extensions
 , pytestCheckHook
+, pytest-mock
+, pytz
+, simplejson
 }:
 
 buildPythonPackage rec {
   pname = "arrow";
   version = "1.0.3";
 
+  disabled = pythonOlder "3.6";
+
   src = fetchPypi {
     inherit pname version;
     sha256 = "399c9c8ae732270e1aa58ead835a79a40d7be8aa109c579898eb41029b5a231d";
   };
 
+  postPatch = ''
+    # no coverage reports
+    sed -i "/addopts/d" tox.ini
+  '';
+
   propagatedBuildInputs = [ python-dateutil ]
-    ++ lib.optionals isPy27 [ backports_functools_lru_cache ];
+    ++ lib.optionals (pythonOlder "3.8") [ typing-extensions ];
 
   checkInputs = [
-    dateparser
     pytestCheckHook
-    pytestcov
     pytest-mock
     pytz
     simplejson
-    sphinx
   ];
 
   # ParserError: Could not parse timezone expression "America/Nuuk"
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index e6f2abf05b72..248cf5c424e0 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -495,8 +495,6 @@ in {
 
   arrow = callPackage ../development/python-modules/arrow { };
 
-  arrow_1 = callPackage ../development/python-modules/arrow/1.nix { };
-
   arviz = callPackage ../development/python-modules/arviz { };
 
   arxiv2bib = callPackage ../development/python-modules/arxiv2bib { };