diff --git a/pkgs/applications/misc/octoprint/default.nix b/pkgs/applications/misc/octoprint/default.nix
index 7d613f37675..793ea927a01 100644
--- a/pkgs/applications/misc/octoprint/default.nix
+++ b/pkgs/applications/misc/octoprint/default.nix
@@ -16,11 +16,17 @@ let
   py = python3.override {
     self = py;
     packageOverrides = lib.foldr lib.composeExtensions (self: super: { }) ([
-      (mkOverride "flask"       "0.12.5" "fac2b9d443e49f7e7358a444a3db5950bdd0324674d92ba67f8f1f15f876b14f")
-      (mkOverride "flaskbabel"  "0.12.2" "11jwp8vvq1gnm31qh6ihy2h393hy18yn9yjp569g60r0wj1x2sii")
-      (mkOverride "tornado"     "4.5.3"  "02jzd23l4r6fswmwxaica9ldlyc2p6q8dk6dyff7j58fmdzf853d")
-      (mkOverride "psutil"      "5.6.7"  "ffad8eb2ac614518bbe3c0b8eb9dffdb3a8d2e3a7d5da51c5b974fb723a5c5aa")
-      (mkOverride "watchdog"    "0.9.0"  "07cnvvlpif7a6cg4rav39zq8fxa5pfqawchr46433pij0y6napwn")
+      (mkOverride "flask"            "0.12.5" "fac2b9d443e49f7e7358a444a3db5950bdd0324674d92ba67f8f1f15f876b14f")
+      (mkOverride "flask_assets"     "0.12"   "0ivqsihk994rxw58vdgzrx4d77d7lpzjm4qxb38hjdgvi5xm4cb0")
+      (mkOverride "flaskbabel"       "0.12.2" "11jwp8vvq1gnm31qh6ihy2h393hy18yn9yjp569g60r0wj1x2sii")
+      (mkOverride "flask_login"      "0.4.1"  "1v2j8zd558xfmgn3rfbw0xz4vizjcnk8kqw52q4f4d9ygfnc25f8")
+      (mkOverride "markdown"         "3.1.1"  "2e50876bcdd74517e7b71f3e7a76102050edec255b3983403f1a63e7c8a41e7a")
+      (mkOverride "tornado"          "4.5.3"  "02jzd23l4r6fswmwxaica9ldlyc2p6q8dk6dyff7j58fmdzf853d")
+      (mkOverride "psutil"           "5.6.7"  "ffad8eb2ac614518bbe3c0b8eb9dffdb3a8d2e3a7d5da51c5b974fb723a5c5aa")
+      (mkOverride "watchdog"         "0.9.0"  "07cnvvlpif7a6cg4rav39zq8fxa5pfqawchr46433pij0y6napwn")
+      (mkOverride "werkzeug"         "0.16.1" "010zmhyfbp4d56c1rgalwi188imjlkv9g7rm25jrvify6xnqalxk")
+      (mkOverride "websocket_client" "0.56.0" "0fpxjyr74klnyis3yf6m54askl0h5dchxcwbfjsq92xng0455m8z")
+      (mkOverride "wrapt"            "1.11.2" "1q81762dgsgrd12f8qc39zk8s5wll3m5xc32jdmlf6cls4gh4njn")
 
       # Octoprint holds back jinja2 to 2.8.1 due to breaking changes.
       # This old version does not have updated test config for pytest 4,
diff --git a/pkgs/development/python-modules/sentry-sdk/default.nix b/pkgs/development/python-modules/sentry-sdk/default.nix
index ef2680bc4c6..9d2a533ecb6 100644
--- a/pkgs/development/python-modules/sentry-sdk/default.nix
+++ b/pkgs/development/python-modules/sentry-sdk/default.nix
@@ -17,6 +17,8 @@
 , stdenv
 , tornado
 , urllib3
+, trytond
+, werkzeug
 }:
 
 buildPythonPackage rec {
@@ -28,10 +30,10 @@ buildPythonPackage rec {
     sha256 = "0e5e947d0f7a969314aa23669a94a9712be5a688ff069ff7b9fc36c66adc160c";
   };
 
-  checkInputs = [ django flask tornado bottle rq falcon sqlalchemy ]
+  checkInputs = [ django flask tornado bottle rq falcon sqlalchemy werkzeug ]
   ++ stdenv.lib.optionals isPy3k [ celery pyramid sanic aiohttp ];
 
-  propagatedBuildInputs = [ urllib3 certifi ];
+  propagatedBuildInputs = [ urllib3 certifi trytond ];
 
   meta = with stdenv.lib; {
     homepage = "https://github.com/getsentry/sentry-python";
diff --git a/pkgs/applications/office/trytond/default.nix b/pkgs/development/python-modules/trytond/default.nix
similarity index 58%
rename from pkgs/applications/office/trytond/default.nix
rename to pkgs/development/python-modules/trytond/default.nix
index c45562a0c8d..4b8afbddb37 100644
--- a/pkgs/applications/office/trytond/default.nix
+++ b/pkgs/development/python-modules/trytond/default.nix
@@ -1,40 +1,65 @@
-{ stdenv, python2Packages
-, withPostgresql ? true }:
+{ stdenv
+, buildPythonApplication
+, fetchPypi
+, mock
+, lxml
+, relatorio
+, genshi
+, dateutil
+, polib
+, python-sql
+, werkzeug
+, wrapt
+, passlib
+, bcrypt
+, pydot
+, python-Levenshtein
+, simplejson
+, html2text
+, psycopg2
+, withPostgresql ? true
+}:
 
 with stdenv.lib;
 
-python2Packages.buildPythonApplication rec {
+buildPythonApplication rec {
   pname = "trytond";
-  version = "4.8.4";
-  src = python2Packages.fetchPypi {
+  version = "5.6.2";
+  src = fetchPypi {
     inherit pname version;
-    sha256 = "1935045b1b4674de602b4279a9cfd0a14431624a28ccb490234cffecb81fbca7";
+    sha256 = "0mlfl34zmmqrwip39mvhkk0h6dsljqwff2mk1ldahm253d4vzflp";
   };
 
   # Tells the tests which database to use
   DB_NAME = ":memory:";
 
-  buildInputs = with python2Packages; [
+  buildInputs = [
     mock
   ];
-  propagatedBuildInputs = with python2Packages; ([
-    dateutil
+  propagatedBuildInputs = [
     lxml
+    relatorio
+    genshi
+    dateutil
     polib
     python-sql
-    relatorio
     werkzeug
     wrapt
-    ipaddress
+    passlib
 
     # extra dependencies
     bcrypt
     pydot
     python-Levenshtein
     simplejson
-    cdecimal
     html2text
-  ] ++ stdenv.lib.optional withPostgresql psycopg2);
+  ] ++ stdenv.lib.optional withPostgresql psycopg2;
+
+  # If unset, trytond will try to mkdir /homeless-shelter
+  preCheck = ''
+    export HOME=$(mktemp -d)
+  '';
+
   meta = {
     description = "The server of the Tryton application platform";
     longDescription = ''
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 14bc46ccb9d..9c02a70aa21 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -7197,7 +7197,7 @@ in
 
   tryton = callPackage ../applications/office/tryton { };
 
-  trytond = callPackage ../applications/office/trytond { };
+  trytond = with python3Packages; toPythonApplication trytond;
 
   omapd = callPackage ../tools/security/omapd { };
 
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 6b0ab50d0d9..e7157ab01ad 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -6066,6 +6066,8 @@ in {
 
   tqdm = callPackage ../development/python-modules/tqdm { };
 
+  trytond = callPackage ../development/python-modules/trytond { };
+
   smmap = callPackage ../development/python-modules/smmap { };
 
   smmap2 = throw "smmap2 has been deprecated, use smmap instead."; # added 2020-03-14