diff --git a/autotests/aztecbarcodetest.cpp b/autotests/aztecbarcodetest.cpp
--- a/autotests/aztecbarcodetest.cpp
+++ b/autotests/aztecbarcodetest.cpp
@@ -388,13 +388,20 @@
     {
         std::unique_ptr<Prison::AbstractBarcode> barcode(Prison::createBarcode(Prison::Aztec));
         QVERIFY(barcode);
+#if PRISON_BUILD_DEPRECATED_SINCE(5, 71)
         QVERIFY(!barcode->minimumSize().isValid());
+#endif
         barcode->setData(QStringLiteral("UNIT TEST"));
+#if PRISON_BUILD_DEPRECATED_SINCE(5, 71)
         QCOMPARE(barcode->minimumSize(), QSize(60, 60));
+#endif
         QCOMPARE(barcode->trueMinimumSize(), QSize(15, 15));
         QCOMPARE(barcode->preferredSize(1), QSize(60, 60));
         QCOMPARE(barcode->preferredSize(2), QSize(30, 30));
+#if PRISON_BUILD_DEPRECATED_SINCE(5, 71)
         QCOMPARE(barcode->toImage(barcode->minimumSize()).size(), QSize(60, 60));
+#endif
+        QCOMPARE(barcode->toImage(barcode->preferredSize(1)).size(), QSize(60, 60));
         QCOMPARE(barcode->toImage({1, 1}).isNull(), true);
     }
 };
diff --git a/autotests/code128barcodetest.cpp b/autotests/code128barcodetest.cpp
--- a/autotests/code128barcodetest.cpp
+++ b/autotests/code128barcodetest.cpp
@@ -105,13 +105,20 @@
     {
         std::unique_ptr<Prison::AbstractBarcode> barcode(Prison::createBarcode(Prison::Code128));
         QVERIFY(barcode);
+#if PRISON_BUILD_DEPRECATED_SINCE(5, 71)
         QVERIFY(!barcode->minimumSize().isValid());
+#endif
         barcode->setData(QStringLiteral("UNIT TEST"));
+#if PRISON_BUILD_DEPRECATED_SINCE(5, 71)
         QCOMPARE(barcode->minimumSize(), QSize(154, 10));
+#endif
         QCOMPARE(barcode->trueMinimumSize(), QSize(154, 1));
         QCOMPARE(barcode->preferredSize(1), QSize(308, 50));
         QCOMPARE(barcode->preferredSize(2), QSize(154, 50));
+#if PRISON_BUILD_DEPRECATED_SINCE(5, 71)
         QCOMPARE(barcode->toImage(barcode->minimumSize()).size(), QSize(154, 10));
+#endif
+        QCOMPARE(barcode->toImage(barcode->preferredSize(1)).size(), QSize(308, 50));
         QCOMPARE(barcode->toImage({1, 1}).isNull(), true);
     }
 };
diff --git a/src/lib/CMakeLists.txt b/src/lib/CMakeLists.txt
--- a/src/lib/CMakeLists.txt
+++ b/src/lib/CMakeLists.txt
@@ -33,7 +33,7 @@
     GROUP_BASE_NAME KF
     VERSION ${KF5_VERSION}
     DEPRECATED_BASE_VERSION 0
-    DEPRECATION_VERSIONS 5.69
+    DEPRECATION_VERSIONS 5.69 5.71
     EXCLUDE_DEPRECATED_BEFORE_AND_AT ${EXCLUDE_DEPRECATED_BEFORE_AND_AT}
 )
 add_library(KF5::Prison ALIAS KF5Prison)
diff --git a/src/lib/abstractbarcode.h b/src/lib/abstractbarcode.h
--- a/src/lib/abstractbarcode.h
+++ b/src/lib/abstractbarcode.h
@@ -59,13 +59,16 @@
      * a null QImage will be returned
      */
     QImage toImage(const QSizeF& size) ;
+#if PRISON_ENABLE_DEPRECATED_SINCE(5, 71)
     /**
      * The minimal size of this barcode.
      * @note This isn't the absolute minimum, but closer to the result of preferredSize(1).
      * @return the minimal size for this barcode.
-     * @deprecated since 5.69 Prefer preferredSize() or trueMinimumSize().
+     * @deprecated since 5.69, use preferredSize() or trueMinimumSize().
      */
+    PRISON_DEPRECATED_VERSION_BELATED(5, 71, 5, 69, "Use preferredSize() or trueMinimumSize()")
     QSizeF minimumSize() const;
+#endif
 
     /**
      * The minimal amount of pixels needed to represent this barcode without loss of information.
diff --git a/src/lib/abstractbarcode.cpp b/src/lib/abstractbarcode.cpp
--- a/src/lib/abstractbarcode.cpp
+++ b/src/lib/abstractbarcode.cpp
@@ -85,6 +85,7 @@
   d->m_cache=QImage();
 }
 
+#if PRISON_BUILD_DEPRECATED_SINCE(5, 71)
 QSizeF AbstractBarcode::minimumSize() const
 {
     d->recompute();
@@ -105,6 +106,7 @@
 
     return d->m_cache.size();
 }
+#endif
 
 QSizeF AbstractBarcode::trueMinimumSize() const
 {
diff --git a/tests/barcodeexamplewidget.cpp b/tests/barcodeexamplewidget.cpp
--- a/tests/barcodeexamplewidget.cpp
+++ b/tests/barcodeexamplewidget.cpp
@@ -6,6 +6,8 @@
 
 #include "barcodeexamplewidget.h"
 #include "src/lib/abstractbarcode.h"
+#include <QGuiApplication>
+#include <QScreen>
 #include <QResizeEvent>
 #include <QPainter>
 #include <QMimeData>
@@ -72,7 +74,7 @@
 QSize BarcodeExampleWidget::minimumSizeHint() const
 {
   if(m_barcode) {
-    return m_barcode->minimumSize().toSize();
+    return m_barcode->preferredSize(QGuiApplication::primaryScreen()->devicePixelRatio()).toSize();
   } else {
     return QWidget::minimumSizeHint();
   }