diff --git a/pkgs/applications/virtualization/virtualbox/default.nix b/pkgs/applications/virtualization/virtualbox/default.nix
index 0bc3af364e6d..31f485768031 100644
--- a/pkgs/applications/virtualization/virtualbox/default.nix
+++ b/pkgs/applications/virtualization/virtualbox/default.nix
@@ -23,7 +23,7 @@ let
   buildType = "release";
   # Use maintainers/scripts/update.nix to update the version and all related hashes or
   # change the hashes in extpack.nix and guest-additions/default.nix as well manually.
-  version = "6.1.22";
+  version = "6.1.26";
 
   iasl' = iasl.overrideAttrs (old: rec {
     inherit (old) pname;
@@ -40,7 +40,7 @@ in stdenv.mkDerivation {
 
   src = fetchurl {
     url = "https://download.virtualbox.org/virtualbox/${version}/VirtualBox-${version}.tar.bz2";
-    sha256 = "99816d2a15205d49362a31e8ffeb8262d2fa0678c751dfd0a7c43b2faca8be49";
+    sha256 = "0212602eea878d6c9fd7f4a3e0182da3e4505f31d25f5539fb8f7b1fbe366195";
   };
 
   outputs = [ "out" "modsrc" ];
@@ -104,6 +104,9 @@ in stdenv.mkDerivation {
     })
   ++ [
     ./qtx11extras.patch
+    # Temporary workaround for broken build
+    # https://www.virtualbox.org/pipermail/vbox-dev/2021-July/015670.html
+    ./fix-configure-pkgconfig-qt.patch
   ];
 
   postPatch = ''
diff --git a/pkgs/applications/virtualization/virtualbox/extpack.nix b/pkgs/applications/virtualization/virtualbox/extpack.nix
index 8c64337c6cb0..5ed763fa2e77 100644
--- a/pkgs/applications/virtualization/virtualbox/extpack.nix
+++ b/pkgs/applications/virtualization/virtualbox/extpack.nix
@@ -12,7 +12,7 @@ fetchurl rec {
     # Manually sha256sum the extensionPack file, must be hex!
     # Thus do not use `nix-prefetch-url` but instead plain old `sha256sum`.
     # Checksums can also be found at https://www.virtualbox.org/download/hashes/${version}/SHA256SUMS
-    let value = "6d33d9cc1c5a8f8a2a70e5aaaa778a341322d2ba7eb34f7de420fb5f312b9e87";
+    let value = "aaa1a1f8615d5bd2e08b158ce6f415262fbb595e169e2d415c5b1844ac258eee";
     in assert (builtins.stringLength value) == 64; value;
 
   meta = {
diff --git a/pkgs/applications/virtualization/virtualbox/fix-configure-pkgconfig-qt.patch b/pkgs/applications/virtualization/virtualbox/fix-configure-pkgconfig-qt.patch
new file mode 100644
index 000000000000..0594a2f19d45
--- /dev/null
+++ b/pkgs/applications/virtualization/virtualbox/fix-configure-pkgconfig-qt.patch
@@ -0,0 +1,11 @@
+Index: /trunk/configure
+===================================================================
+--- a/configure	(revision 90360)
++++ b/configure	(revision 90377)
+@@ -1588,5 +1588,5 @@
+         if [ $? -eq 0 ]; then
+           echo "(Qt5 from pkg-config)" >> $LOG
+-          FLGQT5=`pkg-config Qt5Core Qt5Gui --cflags`
++          FLGQT5=`pkg-config Qt5Core --cflags`
+           # gcc 4.8 is able to compile with C++11 (see also VBOX_GCC_std in Config.kmk)
+           [ $(($cc_maj * 100 + $cc_min)) -ge 408 ] && FLGQT5="$FLGQT5 -std=c++11"
diff --git a/pkgs/applications/virtualization/virtualbox/guest-additions/default.nix b/pkgs/applications/virtualization/virtualbox/guest-additions/default.nix
index 218d4983ca55..66bd2966f5d3 100644
--- a/pkgs/applications/virtualization/virtualbox/guest-additions/default.nix
+++ b/pkgs/applications/virtualization/virtualbox/guest-additions/default.nix
@@ -27,7 +27,7 @@ in stdenv.mkDerivation rec {
 
   src = fetchurl {
     url = "http://download.virtualbox.org/virtualbox/${version}/VBoxGuestAdditions_${version}.iso";
-    sha256 = "bffc316a7b8d5ed56d830e9f6aef02b4e5ffc28674032142e96ffbedd905f8c9";
+    sha256 = "22d02ec417cd7723d7269dbdaa71c48815f580c0ca7a0606c42bd623f84873d7";
   };
 
   KERN_DIR = "${kernel.dev}/lib/modules/${kernel.modDirVersion}/build";