3 files changed, 32 insertions, 2 deletions

diff --git a/gnu/local.mk b/gnu/local.mk
index fe61242cc03..1f146ac0304 100644
--- a/gnu/local.mk
+++ b/gnu/local.mk
@@ -1227,6 +1227,7 @@ dist_patch_DATA =						\
   %D%/packages/patches/doc++-segfault-fix.patch                 \
   %D%/packages/patches/dolphin-emu-unbundle-tinygltf.patch      \
   %D%/packages/patches/dolphin-emu-unbundle-watcher.patch       \
+  %D%/packages/patches/dolphin-qt-6.9-compatibility-fix.patch   \
   %D%/packages/patches/dovecot-opensslv3.patch                  \
   %D%/packages/patches/dovecot-trees-support-dovecot-2.3.patch  \
   %D%/packages/patches/dstat-fix-crash-when-specifying-delay.patch      \
diff --git a/gnu/packages/kde-systemtools.scm b/gnu/packages/kde-systemtools.scm
index 4dab59c99cf..4d61dcbafc8 100644
--- a/gnu/packages/kde-systemtools.scm
+++ b/gnu/packages/kde-systemtools.scm
@@ -91,14 +91,15 @@ This package contains GUI widgets for baloo.")
 (define-public dolphin
   (package
     (name "dolphin")
-    (version "25.12.3")
+    (version "26.04.1")
     (source
      (origin
        (method url-fetch)
        (uri (string-append "mirror://kde/stable/release-service/" version
                            "/src/dolphin-" version ".tar.xz"))
        (sha256
-        (base32 "0fws10g06bm75gs32ch9cw2s5yxwvspm6zxvk3axgnbnq1ydwqcr"))))
+        (base32 "0msgkvnq63k77zmspyf8pjfwzpfxiyqxyx5azs9g6iby5wcsakds"))
+       (patches (search-patches "dolphin-qt-6.9-compatibility-fix.patch"))))
     (build-system qt-build-system)
     (propagated-inputs
      (list kio))
diff --git a/gnu/packages/patches/dolphin-qt-6.9-compatibility-fix.patch b/gnu/packages/patches/dolphin-qt-6.9-compatibility-fix.patch
new file mode 100644
index 00000000000..6d35d901a27
--- /dev/null
+++ b/gnu/packages/patches/dolphin-qt-6.9-compatibility-fix.patch
@@ -0,0 +1,28 @@
+From 8d566618e7db92c10882ee87d361907210b21865 Mon Sep 17 00:00:00 2001
+From: Rodion Goritskov <rodion@goritskov.com>
+Date: Wed, 19 Aug 2026 23:51:26 +0200
+Subject: [PATCH] Qt < 6.10 compatibility fix
+
+Dolphin has minimal Qt version 6.4 specified in CMakeLists.txt, but doesn't build with Qt < 6.10
+Filed a bug upstream https://bugs.kde.org/show_bug.cgi?id=524475
+
+---
+ src/settings/interface/panelsettingspage.cpp | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/settings/interface/panelsettingspage.cpp b/src/settings/interface/panelsettingspage.cpp
+index c564e97fc..a42b9e9a5 100644
+--- a/src/settings/interface/panelsettingspage.cpp
++++ b/src/settings/interface/panelsettingspage.cpp
+@@ -27,7 +27,7 @@ PanelSettingsPage::PanelSettingsPage(QWidget *parent)
+ 
+ {
+     QVBoxLayout *layout = new QVBoxLayout(this);
+-    layout->setVerticalSizeConstraint(QLayout::SetFixedSize);
++    layout->setSizeConstraint(QLayout::SetFixedSize);
+ 
+     QFormLayout *topLayout = new QFormLayout();
+     layout->addLayout(topLayout);
+-- 
+2.54.0
+