diff --git a/sci-astronomy/stellarium/files/stellarium-0.25.1-qt69.patch b/sci-astronomy/stellarium/files/stellarium-0.25.1-qt69.patch
new file mode 100644
index 0000000000000..ed59c719dc19a
--- /dev/null
+++ b/sci-astronomy/stellarium/files/stellarium-0.25.1-qt69.patch
@@ -0,0 +1,58 @@
+From bbcd60ae52b6f1395ef2390a2d2ba9d0f98db548 Mon Sep 17 00:00:00 2001
+From: "Alexander V. Wolf" <alex.v.wolf@gmail.com>
+Date: Wed, 26 Mar 2025 01:55:43 +0700
+Subject: [PATCH] [Qt 6.9] Fix compilation
+
+---
+ src/core/modules/ZoneArray.cpp |  2 +-
+ src/gui/AngleSpinBox.cpp       | 12 +++++-------
+ 2 files changed, 6 insertions(+), 8 deletions(-)
+
+diff --git a/src/core/modules/ZoneArray.cpp b/src/core/modules/ZoneArray.cpp
+index 19567500ae9bc..6ce092112767f 100644
+--- a/src/core/modules/ZoneArray.cpp
++++ b/src/core/modules/ZoneArray.cpp
+@@ -564,7 +564,7 @@ void SpecialZoneArray<Star>::searchAround(const StelCore* core, int index, const
+ 	const float dyrs = static_cast<float>(core->getJDE()-STAR_CATALOG_JDEPOCH)/365.25;
+ 	const SpecialZoneData<Star> *const z = getZones()+index;
+ 	Vec3d tmp;
+-	double RA, DEC, pmra, pmdec, PlxErr, Plx, RadialVel;
++	double RA, DEC, pmra, pmdec, Plx, RadialVel;
+ 	for (const Star* s=z->getStars();s<z->getStars()+z->size;++s)
+ 	{
+ 		s->getFull6DSolution(RA, DEC, Plx, pmra, pmdec, RadialVel, dyrs);
+diff --git a/src/gui/AngleSpinBox.cpp b/src/gui/AngleSpinBox.cpp
+index 3b1e4f9f2267b..bb7cb5da0166a 100644
+--- a/src/gui/AngleSpinBox.cpp
++++ b/src/gui/AngleSpinBox.cpp
+@@ -509,25 +509,23 @@ QSize AngleSpinBox::minimumSizeHint() const
+ 		case DMSSymbolsUnsigned:
+ 		{
+ 			if (angleSpinBoxFormat == DMSLetters || angleSpinBoxFormat == DMSLettersUnsigned)
+-				refText = QString("%1%2d %3m %4s").arg(signPlaceholder).arg(359).arg(59)
+-				                                  .arg(0, 0, 'f', decimalPlaces, ' ');
++				refText = QString("%1%2d %3m %4s").arg(signPlaceholder).arg(359).arg(59).arg(0., 0, 'f', decimalPlaces, ' ');
+ 			else
+-				refText = QString("%1%2° %3' %4\"").arg(signPlaceholder).arg(359).arg(59)
+-				                                   .arg(0, 0, 'f', decimalPlaces, ' ');
++				refText = QString("%1%2° %3' %4\"").arg(signPlaceholder).arg(359).arg(59).arg(0., 0, 'f', decimalPlaces, ' ');
+ 			break;
+ 		}
+ 		case HMSLetters:
+ 		case HMSSymbols:
+ 		{
+ 			if (angleSpinBoxFormat == HMSLetters)
+-				refText = QString("%1h %2m %3s").arg(23).arg(59).arg(0, 0, 'f', decimalPlaces, ' ');
++				refText = QString("%1h %2m %3s").arg(23).arg(59).arg(0., 0, 'f', decimalPlaces, ' ');
+ 			else
+-				refText = QString("%1h %2' %3\"").arg(23).arg(59).arg(0, 0, 'f', decimalPlaces, ' ');
++				refText = QString("%1h %2' %3\"").arg(23).arg(59).arg(0., 0, 'f', decimalPlaces, ' ');
+ 			break;
+ 		}
+ 		case DecimalDeg:
+ 		{
+-			refText = QString("%1%2°").arg(signPlaceholder).arg(360, 0, 'f', decimalPlaces, ' ');
++			refText = QString("%1%2°").arg(signPlaceholder).arg(360., 0, 'f', decimalPlaces, ' ');
+ 			break;
+ 		}
+ 		default:
diff --git a/sci-astronomy/stellarium/stellarium-25.1.ebuild b/sci-astronomy/stellarium/stellarium-25.1.ebuild
index 0786419d3f705..48c2561592e4a 100644
--- a/sci-astronomy/stellarium/stellarium-25.1.ebuild
+++ b/sci-astronomy/stellarium/stellarium-25.1.ebuild
@@ -87,6 +87,7 @@ RESTRICT="!test? ( test )"
 PATCHES=(
 	"${FILESDIR}/stellarium-0.25.1-md4c.patch"
 	"${FILESDIR}/stellarium-0.25.1-astrometry.patch"
+	"${FILESDIR}/stellarium-0.25.1-qt69.patch"
 )
 
 VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/stellarium.asc