diff --git a/pkgs/applications/networking/linssid/default.nix b/pkgs/applications/networking/linssid/default.nix
index 090f53cffb62..72128a5ef95c 100644
--- a/pkgs/applications/networking/linssid/default.nix
+++ b/pkgs/applications/networking/linssid/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchurl, qtbase, qtsvg, qmake, pkg-config, boost, wirelesstools, iw, qwt, wrapQtAppsHook }:
+{ lib, stdenv, fetchurl, qtbase, qtsvg, qmake, pkg-config, boost, wirelesstools, iw, qwt6_1, wrapQtAppsHook }:
 
 stdenv.mkDerivation rec {
   pname = "linssid";
@@ -10,12 +10,12 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [ pkg-config qmake wrapQtAppsHook ];
-  buildInputs = [ qtbase qtsvg boost qwt ];
+  buildInputs = [ qtbase qtsvg boost qwt6_1 ];
 
   patches = [ ./0001-unbundled-qwt.patch ];
 
   postPatch = ''
-    sed -e "s|/usr/include/qt5.*$|& ${qwt}/include|" -i linssid-app/linssid-app.pro
+    sed -e "s|/usr/include/qt5.*$|& ${qwt6_1}/include|" -i linssid-app/linssid-app.pro
     sed -e "s|/usr/include/|/nonexistent/|g" -i linssid-app/*.pro
     sed -e 's|^LIBS .*= .*libboost_regex.a|LIBS += -lboost_regex|' \
         -e "s|/usr|$out|g" \
diff --git a/pkgs/applications/radio/pothos/default.nix b/pkgs/applications/radio/pothos/default.nix
index 817013dbf3ec..1b36b36829a0 100644
--- a/pkgs/applications/radio/pothos/default.nix
+++ b/pkgs/applications/radio/pothos/default.nix
@@ -9,7 +9,7 @@
 , poco
 , qtbase
 , qtsvg
-, libsForQt5
+, qwt6_1
 , nlohmann_json
 , soapysdr-with-plugins
 , portaudio
@@ -38,7 +38,7 @@ mkDerivation rec {
   nativeBuildInputs = [ cmake pkg-config doxygen wrapQtAppsHook ];
 
   buildInputs = [
-    pcre poco qtbase qtsvg libsForQt5.qwt nlohmann_json
+    pcre poco qtbase qtsvg qwt6_1 nlohmann_json
     soapysdr-with-plugins portaudio alsa-lib muparserx python3
   ];
 
diff --git a/pkgs/applications/science/electronics/caneda/default.nix b/pkgs/applications/science/electronics/caneda/default.nix
index 6a9a491af1ee..1adac4832a13 100644
--- a/pkgs/applications/science/electronics/caneda/default.nix
+++ b/pkgs/applications/science/electronics/caneda/default.nix
@@ -1,4 +1,4 @@
-{ mkDerivation, lib, fetchFromGitHub, cmake, qtbase, qttools, qtsvg, qwt }:
+{ mkDerivation, lib, fetchFromGitHub, cmake, qtbase, qttools, qtsvg, qwt6_1}:
 
 mkDerivation rec {
   pname = "caneda";
@@ -12,7 +12,7 @@ mkDerivation rec {
   };
 
   nativeBuildInputs = [ cmake ];
-  buildInputs = [ qtbase qttools qtsvg qwt ];
+  buildInputs = [ qtbase qttools qtsvg qwt6_1 ];
 
   meta = {
     description = "Open source EDA software focused on easy of use and portability";
diff --git a/pkgs/development/libraries/qwt/6.nix b/pkgs/development/libraries/qwt/6.nix
index a9fa29ba4d4f..dbf3b1abef45 100644
--- a/pkgs/development/libraries/qwt/6.nix
+++ b/pkgs/development/libraries/qwt/6.nix
@@ -2,11 +2,11 @@
 
 stdenv.mkDerivation rec {
   pname = "qwt";
-  version = "6.1.6";
+  version = "6.2.0";
 
   src = fetchurl {
     url = "mirror://sourceforge/qwt/qwt-${version}.tar.bz2";
-    sha256 = "sha256-mUYNMcEV7kEXsBddiF9HwsWQ14QgbwmBXcBY++Xt4fY=";
+    sha256 = "sha256-kZT2UTlV0P1zAPZxWBdQZEYBl6urGpL6EnpnpLC3FTA=";
   };
 
   propagatedBuildInputs = [ qtbase qtsvg qttools ];
diff --git a/pkgs/tools/audio/opl3bankeditor/common.nix b/pkgs/tools/audio/opl3bankeditor/common.nix
index 04f4d3aae5ab..982b8f8349f3 100644
--- a/pkgs/tools/audio/opl3bankeditor/common.nix
+++ b/pkgs/tools/audio/opl3bankeditor/common.nix
@@ -9,7 +9,7 @@
 , pkg-config
 , qttools
 , qtbase
-, qwt
+, qwt6_1
 , rtaudio
 , rtmidi
 }:
@@ -43,7 +43,7 @@ mkDerivation rec {
 
   buildInputs = [
     qtbase
-    qwt
+    qwt6_1
     rtaudio
     rtmidi
   ];
@@ -52,7 +52,7 @@ mkDerivation rec {
     mkdir $out/{bin,Applications}
     mv "${binname}.app" $out/Applications/
 
-    install_name_tool -change {,${qwt}/lib/}libqwt.6.dylib "$out/Applications/${binname}.app/Contents/MacOS/${binname}"
+    install_name_tool -change {,${qwt6_1}/lib/}libqwt.6.dylib "$out/Applications/${binname}.app/Contents/MacOS/${binname}"
 
     ln -s "$out/Applications/${binname}.app/Contents/MacOS/${binname}" $out/bin/${mainProgram}
   '';