diff --git a/plugins/Assembler/DialogAssembler.cpp b/plugins/Assembler/DialogAssembler.cpp
index 78fd62af3..8e4765f3a 100644
--- a/plugins/Assembler/DialogAssembler.cpp
+++ b/plugins/Assembler/DialogAssembler.cpp
@@ -29,7 +29,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include <QLineEdit>
 #include <QMessageBox>
 #include <QProcess>
-#include <QRegExp>
+#include <QRegularExpression>
 #include <QSettings>
 #include <QTemporaryFile>
 #include <QTextDocument>
@@ -104,12 +104,14 @@ QString fixup_syntax(QString insn) {
 		"tbyte",
 		"xmmword",
 		"ymmword",
-		"zmmword"};
+		"zmmword",
+	};
 
 	for (const QString &size : sizes) {
 		const QString replacement = opSizes.attribute(size);
 		if (!replacement.isEmpty()) {
-			insn.replace(QRegExp("\\b" + size + "\\b"), replacement);
+			const QRegularExpression re("\\b" + size + "\\b");
+			insn.replace(re, replacement);
 		}
 	}
 
diff --git a/plugins/ODbgRegisterView/DialogEditSimdRegister.cpp b/plugins/ODbgRegisterView/DialogEditSimdRegister.cpp
index 4808776fe..56d172f74 100644
--- a/plugins/ODbgRegisterView/DialogEditSimdRegister.cpp
+++ b/plugins/ODbgRegisterView/DialogEditSimdRegister.cpp
@@ -31,7 +31,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include <QLineEdit>
 #include <QRadioButton>
 #include <QRegExp>
-#include <QRegExpValidator>
+#include <QRegularExpression>
+#include <QRegularExpressionValidator>
 #include <cstring>
 #include <limits>
 #include <type_traits>
@@ -56,10 +57,10 @@ void DialogEditSimdRegister::setupEntries(const QString &label, std::array<Numbe
 
 DialogEditSimdRegister::DialogEditSimdRegister(QWidget *parent, Qt::WindowFlags f)
 	: QDialog(parent, f),
-	  byteHexValidator_(new QRegExpValidator(QRegExp("[0-9a-fA-F]{0,2}"), this)),
-	  wordHexValidator_(new QRegExpValidator(QRegExp("[0-9a-fA-F]{0,4}"), this)),
-	  dwordHexValidator_(new QRegExpValidator(QRegExp("[0-9a-fA-F]{0,8}"), this)),
-	  qwordHexValidator_(new QRegExpValidator(QRegExp("[0-9a-fA-F]{0,16}"), this)),
+	  byteHexValidator_(new QRegularExpressionValidator(QRegularExpression("[0-9a-fA-F]{0,2}"), this)),
+	  wordHexValidator_(new QRegularExpressionValidator(QRegularExpression("[0-9a-fA-F]{0,4}"), this)),
+	  dwordHexValidator_(new QRegularExpressionValidator(QRegularExpression("[0-9a-fA-F]{0,8}"), this)),
+	  qwordHexValidator_(new QRegularExpressionValidator(QRegularExpression("[0-9a-fA-F]{0,16}"), this)),
 	  byteSignedValidator_(new QLongValidator(INT8_MIN, INT8_MAX, this)),
 	  wordSignedValidator_(new QLongValidator(INT16_MIN, INT16_MAX, this)),
 	  dwordSignedValidator_(new QLongValidator(INT32_MIN, INT32_MAX, this)),
diff --git a/plugins/ODbgRegisterView/DialogEditSimdRegister.h b/plugins/ODbgRegisterView/DialogEditSimdRegister.h
index 91c12f391..a131a5cb5 100644
--- a/plugins/ODbgRegisterView/DialogEditSimdRegister.h
+++ b/plugins/ODbgRegisterView/DialogEditSimdRegister.h
@@ -31,7 +31,7 @@ class QDialogButtonBox;
 class QHBoxLayout;
 class QLongValidator;
 class QRadioButton;
-class QRegExpValidator;
+class QRegularExpressionValidator;
 class QULongValidator;
 class QValidator;
 
@@ -128,10 +128,10 @@ private Q_SLOTS:
 	std::array<NumberEdit *, NumBytes> bytes_;
 	std::array<QLabel *, NumBytes> columnLabels_;
 
-	QRegExpValidator *byteHexValidator_;
-	QRegExpValidator *wordHexValidator_;
-	QRegExpValidator *dwordHexValidator_;
-	QRegExpValidator *qwordHexValidator_;
+	QRegularExpressionValidator *byteHexValidator_;
+	QRegularExpressionValidator *wordHexValidator_;
+	QRegularExpressionValidator *dwordHexValidator_;
+	QRegularExpressionValidator *qwordHexValidator_;
 
 	QLongValidator *byteSignedValidator_;
 	QLongValidator *wordSignedValidator_;
diff --git a/plugins/ODbgRegisterView/GprEdit.cpp b/plugins/ODbgRegisterView/GprEdit.cpp
index c538ea962..6993e2e21 100644
--- a/plugins/ODbgRegisterView/GprEdit.cpp
+++ b/plugins/ODbgRegisterView/GprEdit.cpp
@@ -20,17 +20,17 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include "QULongValidator.h"
 #include "util/Font.h"
 #include <QApplication>
-#include <QRegExpValidator>
+#include <QRegularExpressionValidator>
 #include <cmath>
 #include <cstring>
 
 namespace ODbgRegisterView {
 namespace {
 
-const QRegExpValidator byteHexValidator(QRegExp("[0-9a-fA-F]{0,2}"));
-const QRegExpValidator wordHexValidator(QRegExp("[0-9a-fA-F]{0,4}"));
-const QRegExpValidator dwordHexValidator(QRegExp("[0-9a-fA-F]{0,8}"));
-const QRegExpValidator qwordHexValidator(QRegExp("[0-9a-fA-F]{0,16}"));
+const QRegularExpressionValidator byteHexValidator(QRegularExpression("[0-9a-fA-F]{0,2}"));
+const QRegularExpressionValidator wordHexValidator(QRegularExpression("[0-9a-fA-F]{0,4}"));
+const QRegularExpressionValidator dwordHexValidator(QRegularExpression("[0-9a-fA-F]{0,8}"));
+const QRegularExpressionValidator qwordHexValidator(QRegularExpression("[0-9a-fA-F]{0,16}"));
 const QLongValidator byteSignedValidator(INT8_MIN, INT8_MAX);
 const QLongValidator wordSignedValidator(INT16_MIN, INT16_MAX);
 const QLongValidator dwordSignedValidator(INT32_MIN, INT32_MAX);
@@ -40,7 +40,7 @@ const QULongValidator wordUnsignedValidator(0, UINT16_MAX);
 const QULongValidator dwordUnsignedValidator(0, UINT32_MAX);
 const QULongValidator qwordUnsignedValidator(0, UINT64_MAX);
 
-const std::map<int, const QRegExpValidator *> hexValidators = {
+const std::map<int, const QRegularExpressionValidator *> hexValidators = {
 	{1, &byteHexValidator},
 	{2, &wordHexValidator},
 	{4, &dwordHexValidator},
diff --git a/plugins/ODbgRegisterView/arch/x86-generic/DialogEditFPU.cpp b/plugins/ODbgRegisterView/arch/x86-generic/DialogEditFPU.cpp
index 2429057f7..fb8353ed8 100644
--- a/plugins/ODbgRegisterView/arch/x86-generic/DialogEditFPU.cpp
+++ b/plugins/ODbgRegisterView/arch/x86-generic/DialogEditFPU.cpp
@@ -25,7 +25,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include <QGridLayout>
 #include <QLabel>
 #include <QLineEdit>
-#include <QRegExp>
+#include <QRegularExpression>
+#include <QRegularExpressionValidator>
 #include <QVBoxLayout>
 #include <array>
 #include <cmath>
@@ -95,7 +96,7 @@ DialogEditFPU::DialogEditFPU(QWidget *parent, Qt::WindowFlags f)
 	connect(floatEntry_, &Float80Edit::textEdited, this, &DialogEditFPU::onFloatEdited);
 	connect(hexEntry_, &QLineEdit::textEdited, this, &DialogEditFPU::onHexEdited);
 
-	hexEntry_->setValidator(new QRegExpValidator(QRegExp("[0-9a-fA-F ]{,20}"), this));
+	hexEntry_->setValidator(new QRegularExpressionValidator(QRegularExpression("[0-9a-fA-F ]{,20}"), this));
 	connect(floatEntry_, &Float80Edit::defocussed, this, &DialogEditFPU::updateFloatEntry);
 
 	hexEntry_->installEventFilter(this);
diff --git a/src/DialogInputValue.cpp b/src/DialogInputValue.cpp
index 78595bd88..9ea283fa4 100644
--- a/src/DialogInputValue.cpp
+++ b/src/DialogInputValue.cpp
@@ -23,7 +23,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include "edb.h"
 
 #include <QDebug>
-#include <QRegExpValidator>
+#include <QRegularExpressionValidator>
 
 #include <limits>
 
@@ -37,7 +37,7 @@ DialogInputValue::DialogInputValue(QWidget *parent, Qt::WindowFlags f)
 	ui.setupUi(this);
 
 	// Apply some defaults
-	ui.hexInput->setValidator(new QRegExpValidator(QRegExp("[A-Fa-f0-9]{0,16}"), this));
+	ui.hexInput->setValidator(new QRegularExpressionValidator(QRegularExpression("[A-Fa-f0-9]{0,16}"), this));
 	ui.signedInput->setValidator(new QLongValidator(std::numeric_limits<long long>::min(), std::numeric_limits<long long>::max(), this));
 	ui.unsignedInput->setValidator(new QULongValidator(0, std::numeric_limits<unsigned long long>::max(), this));
 }
@@ -72,7 +72,7 @@ void DialogInputValue::setValue(Register &reg) {
 	mask_                           = unsignedMax;
 	valueLength_                    = reg.bitSize() / 8;
 
-	ui.hexInput->setValidator(new QRegExpValidator(QRegExp(regex), this));
+	ui.hexInput->setValidator(new QRegularExpressionValidator(QRegularExpression(regex), this));
 	ui.signedInput->setValidator(new QLongValidator(signedMin, signedMax, this));
 	ui.unsignedInput->setValidator(new QULongValidator(0, unsignedMax, this));
 }
diff --git a/src/FloatX.cpp b/src/FloatX.cpp
index 2c2fbbedf..6f0bc1d7e 100644
--- a/src/FloatX.cpp
+++ b/src/FloatX.cpp
@@ -379,10 +379,10 @@ QValidator::State FloatXValidator<Float>::validate(QString &input, int &) const
 	}
 
 	// OK, so we failed to read it or it is unfinished. Let's check whether it's intermediate or invalid.
-	QRegExp basicFormat("[+-]?[0-9]*\\.?[0-9]*(e([+-]?[0-9]*)?)?");
-	QRegExp specialFormat("[+-]?[sq]?nan|[+-]?inf", Qt::CaseInsensitive);
-	QRegExp hexfloatFormat("[+-]?0x[0-9a-f]*\\.?[0-9a-f]*(p([+-]?[0-9]*)?)?", Qt::CaseInsensitive);
-	QRegExp specialFormatUnfinished("[+-]?[sq]?(n(an?)?)?|[+-]?(i(nf?)?)?", Qt::CaseInsensitive);
+	static const QRegExp basicFormat("[+-]?[0-9]*\\.?[0-9]*(e([+-]?[0-9]*)?)?");
+	static const QRegExp specialFormat("[+-]?[sq]?nan|[+-]?inf", Qt::CaseInsensitive);
+	static const QRegExp hexfloatFormat("[+-]?0x[0-9a-f]*\\.?[0-9a-f]*(p([+-]?[0-9]*)?)?", Qt::CaseInsensitive);
+	static const QRegExp specialFormatUnfinished("[+-]?[sq]?(n(an?)?)?|[+-]?(i(nf?)?)?", Qt::CaseInsensitive);
 
 	if (hexfloatFormat.exactMatch(input)) {
 		return QValidator::Intermediate;
diff --git a/src/widgets/QDisassemblyView.cpp b/src/widgets/QDisassemblyView.cpp
index 50ec49fd9..95365c92a 100644
--- a/src/widgets/QDisassemblyView.cpp
+++ b/src/widgets/QDisassemblyView.cpp
@@ -576,7 +576,7 @@ QString QDisassemblyView::instructionString(const edb::Instruction &inst) const
 
 				const bool showSymbolicAddresses = edb::v1::config().show_symbolic_addresses;
 
-				static const QRegExp addrPattern(QLatin1String("#?0x[0-9a-fA-F]+"));
+				static const QRegularExpression addrPattern(QLatin1String("#?0x[0-9a-fA-F]+"));
 				const edb::address_t target = oper->imm;
 
 				const bool showLocalModuleNames = edb::v1::config().show_local_module_name_in_jump_targets;