diff --git a/pkgs/applications/misc/cura/default.nix b/pkgs/applications/misc/cura/default.nix
index 7187b8c00991..d48efb1a1127 100644
--- a/pkgs/applications/misc/cura/default.nix
+++ b/pkgs/applications/misc/cura/default.nix
@@ -2,20 +2,20 @@
 
 mkDerivation rec {
   pname = "cura";
-  version = "4.4.0";
+  version = "4.5.0";
 
   src = fetchFromGitHub {
     owner = "Ultimaker";
     repo = "Cura";
-    rev = "v${version}";
-    sha256 = "131n36qhdfky584wr3zv73ckjjprwaqb5fih8yln2syf8b7ziwlz";
+    rev = version;
+    sha256 = "0fm04s912sgmr66wyb55ly4jh39ijsj6lx4fx9wn7hchlqmw5jxi";
   };
 
   materials = fetchFromGitHub {
     owner = "Ultimaker";
     repo = "fdm_materials";
     rev = version;
-    sha256 = "141cv1f2pv2pznhgj32zg8bw3kmw9002g6rx16jq7lhclr0x3xls";
+    sha256 = "0fgkwz1anw49macq1jxjhjr79slhmx7g3zwij7g9fqyzzhrrmwqn";
   };
 
   buildInputs = [ qtbase qtquickcontrols2 qtgraphicaleffects ];
diff --git a/pkgs/applications/misc/curaengine/default.nix b/pkgs/applications/misc/curaengine/default.nix
index 6594deb84a5a..2eb256935d77 100644
--- a/pkgs/applications/misc/curaengine/default.nix
+++ b/pkgs/applications/misc/curaengine/default.nix
@@ -2,13 +2,13 @@
 
 stdenv.mkDerivation rec {
   pname = "curaengine";
-  version = "4.4.0";
+  version = "4.5.0";
 
   src = fetchFromGitHub {
     owner = "Ultimaker";
     repo = "CuraEngine";
     rev = version;
-    sha256 = "1m89bp4g0dldh7vv1clj110m29ajiaghdq7b49mb3y8ifgrf8rdi";
+    sha256 = "1gml8f6yqmghgncl1zggs7h2hdh05wf68jw9npg0gh7n9l7yzkk4";
   };
 
   nativeBuildInputs = [ cmake ];
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "A powerful, fast and robust engine for processing 3D models into 3D printing instruction";
-    homepage = https://github.com/Ultimaker/CuraEngine;
+    homepage = "https://github.com/Ultimaker/CuraEngine";
     license = licenses.agpl3;
     platforms = platforms.linux;
     maintainers = with maintainers; [ abbradar gebner ];
diff --git a/pkgs/development/python-modules/libarcus/default.nix b/pkgs/development/python-modules/libarcus/default.nix
index 97fd448f1838..fdb6ebb3fe32 100644
--- a/pkgs/development/python-modules/libarcus/default.nix
+++ b/pkgs/development/python-modules/libarcus/default.nix
@@ -3,14 +3,14 @@
 
 buildPythonPackage rec {
   pname = "libarcus";
-  version = "4.4.0";
+  version = "4.5.0";
   format = "other";
 
   src = fetchFromGitHub {
     owner = "Ultimaker";
     repo = "libArcus";
     rev = version;
-    sha256 = "16m7m6ak5fqw3djn4azwiamkizcc1dv7brv11kv99n3b43zzgn6d";
+    sha256 = "1sfy8skvgw6hiihs9jmfn7a13yappqwffir98pahyg7cim7p55kr";
   };
 
   disabled = pythonOlder "3.4.0";
diff --git a/pkgs/development/python-modules/libsavitar/default.nix b/pkgs/development/python-modules/libsavitar/default.nix
index b43468bdf9cb..abde16d8700b 100644
--- a/pkgs/development/python-modules/libsavitar/default.nix
+++ b/pkgs/development/python-modules/libsavitar/default.nix
@@ -2,14 +2,14 @@
 
 buildPythonPackage rec {
   pname = "libsavitar";
-  version = "4.4.0";
+  version = "4.5.0";
   format = "other";
 
   src = fetchFromGitHub {
     owner = "Ultimaker";
     repo = "libSavitar";
     rev = version;
-    sha256 = "0sm8945icbdxvyj7yiq9yhkk17ww3gjkpsbk7875qijzlgfs60j8";
+    sha256 = "1l3l8cgaxzqdk93880p2ijrabshdj5sq05cwj1i6jpmhlqc5b9rx";
   };
 
   postPatch = ''
diff --git a/pkgs/development/python-modules/uranium/default.nix b/pkgs/development/python-modules/uranium/default.nix
index a8259451bb0f..64333f23929c 100644
--- a/pkgs/development/python-modules/uranium/default.nix
+++ b/pkgs/development/python-modules/uranium/default.nix
@@ -2,7 +2,7 @@
 , pyqt5, numpy, scipy, shapely, libarcus, doxygen, gettext, pythonOlder }:
 
 buildPythonPackage rec {
-  version = "4.4.0";
+  version = "4.5.0";
   pname = "uranium";
   format = "other";
 
@@ -10,7 +10,7 @@ buildPythonPackage rec {
     owner = "Ultimaker";
     repo = "Uranium";
     rev = version;
-    sha256 = "1hy7lhn48mfrmfx6mbqxzc6bfh9ndnvcwjlsb6a71mw62xg6w7c2";
+    sha256 = "1l8fwj521irla42bdbw298d3c5rjpn1nm9xhjnx7hidbqixr5d27";
   };
 
   disabled = pythonOlder "3.5.0";