diff --git a/pkgs/applications/misc/prusa-slicer/default.nix b/pkgs/applications/misc/prusa-slicer/default.nix
index 936efd60e95b..286abfb3fdb1 100644
--- a/pkgs/applications/misc/prusa-slicer/default.nix
+++ b/pkgs/applications/misc/prusa-slicer/default.nix
@@ -22,6 +22,7 @@
 , libpng
 , mpfr
 , nlopt
+, opencascade-occt
 , openvdb
 , pcre
 , qhull
@@ -48,7 +49,7 @@ let
 in
 stdenv.mkDerivation rec {
   pname = "prusa-slicer";
-  version = "2.4.2";
+  version = "2.5.0";
 
   nativeBuildInputs = [
     cmake
@@ -74,6 +75,7 @@ stdenv.mkDerivation rec {
     libpng
     mpfr
     nlopt
+    opencascade-occt
     openvdb
     pcre
     systemd
@@ -133,7 +135,7 @@ stdenv.mkDerivation rec {
   src = fetchFromGitHub {
     owner = "prusa3d";
     repo = "PrusaSlicer";
-    sha256 = "17p56f0zmiryy8k4da02in1l6yxniz286gf9yz8s1gaz5ksqj4af";
+    sha256 = "sha256-wLe+5TFdkgQ1mlGYgp8HBzugeONSne17dsBbwblILJ4=";
     rev = "version_${version}";
   };
 
diff --git a/pkgs/development/libraries/opencascade-occt/default.nix b/pkgs/development/libraries/opencascade-occt/default.nix
index f2a9833d77d0..2a8d49d9d134 100644
--- a/pkgs/development/libraries/opencascade-occt/default.nix
+++ b/pkgs/development/libraries/opencascade-occt/default.nix
@@ -3,13 +3,13 @@
 
 stdenv.mkDerivation rec {
   pname = "opencascade-occt";
-  version = "7.5.1";
+  version = "7.6.2";
   commit = "V${builtins.replaceStrings ["."] ["_"] version}";
 
   src = fetchurl {
     name = "occt-${commit}.tar.gz";
     url = "https://git.dev.opencascade.org/gitweb/?p=occt.git;a=snapshot;h=${commit};sf=tgz";
-    sha256 = "sha256-1whKU+7AMVYabfs15x8MabohKonn5oM54ZEtxF93wAo=";
+    sha256 = "sha256-n3KFrN/mN1SVXfuhEUAQ1fJzrCvhiclxfEIouyj9Z18=";
   };
 
   nativeBuildInputs = [ cmake ninja ];
diff --git a/pkgs/development/python-modules/pythonocc-core/default.nix b/pkgs/development/python-modules/pythonocc-core/default.nix
index 8a9433ec898f..1bef56a01a40 100644
--- a/pkgs/development/python-modules/pythonocc-core/default.nix
+++ b/pkgs/development/python-modules/pythonocc-core/default.nix
@@ -12,18 +12,18 @@
 , opencascade-occt
 , rapidjson
 , smesh
-, swig
+, swig4
 }:
 
 stdenv.mkDerivation rec {
   pname = "pythonocc-core";
-  version = "7.5.1";
+  version = "7.6.2";
 
   src = fetchFromGitHub {
     owner = "tpaviot";
     repo = "pythonocc-core";
     rev = version;
-    sha256 = "1md6x60pnfq0qv4lsnmjv6i96mzdrcpxcgpb316i7wmv9b5ci01s";
+    sha256 = "sha256-45pqPQ07KYlpFwJSAYVHbzuqDQTbAvPpxReal52DCzU=";
   };
 
   postPatch = ''
@@ -32,7 +32,7 @@ stdenv.mkDerivation rec {
     --replace "/usr/X11R6/lib/libGLU.dylib" "${libGLU}/lib/libGLU.dylib"
   '';
 
-  nativeBuildInputs = [ cmake swig ];
+  nativeBuildInputs = [ cmake swig4 ];
   buildInputs = [
     python opencascade-occt smesh
     freetype libGL libGLU libX11 libXext libXmu libXi