diff --git a/src/blackcore/vatsim/networkvatlib.cpp b/src/blackcore/vatsim/networkvatlib.cpp
index 83d80bf70..72c04a239 100644
--- a/src/blackcore/vatsim/networkvatlib.cpp
+++ b/src/blackcore/vatsim/networkvatlib.cpp
@@ -49,7 +49,7 @@
 #include <QJsonParseError>
 #include <QJsonValue>
 #include <QList>
-#include <QRegExp>
+#include <QRegularExpression>
 #include <QTextCodec>
 #include <QVector>
 #include <Qt>
@@ -1062,7 +1062,7 @@ namespace BlackCore
                 {
                     //  detect the stupid z1, z2, z3 placeholders
                     //! \fixme: Anything better as this stupid code here?
-                    const QString test = fixed.toLower().remove(QRegExp("[\\n\\t\\r]"));
+                    const QString test = fixed.toLower().remove(QRegularExpression("[\\n\\t\\r]"));
                     if (test == "z") return;
                     if (test.startsWith("z") && test.length() == 2) return; // z1, z2, ..
                     if (test.length() == 1) return; // sometimes just z
@@ -1088,8 +1088,8 @@ namespace BlackCore
             }
 
             auto cruiseAltString = cbvar_cast(cbvar)->fromFSD(fp->cruiseAltitude);
-            static const QRegExp withUnit("\\D+");
-            if (!cruiseAltString.isEmpty() && withUnit.indexIn(cruiseAltString) < 0)
+            thread_local const QRegularExpression withUnit("\\D+");
+            if (!cruiseAltString.isEmpty() && !withUnit.match(cruiseAltString).hasMatch())
             {
                 cruiseAltString += "ft";
             }
diff --git a/src/blackcore/vatsim/vatsimdatafilereader.cpp b/src/blackcore/vatsim/vatsimdatafilereader.cpp
index e5e13b606..0f5180de0 100644
--- a/src/blackcore/vatsim/vatsimdatafilereader.cpp
+++ b/src/blackcore/vatsim/vatsimdatafilereader.cpp
@@ -35,7 +35,6 @@
 #include <QMetaObject>
 #include <QNetworkReply>
 #include <QReadLocker>
-#include <QRegExp>
 #include <QRegularExpression>
 #include <QScopedPointer>
 #include <QScopedPointerDeleteLater>
@@ -317,7 +316,7 @@ namespace BlackCore
                                 {
                                     // http://uk.flightaware.com/about/faq_aircraft_flight_plan_suffix.rvt
                                     // we expect something like H/B772/F B773 B773/F
-                                    static const QRegularExpression reg("/.");
+                                    thread_local const QRegularExpression reg("/.");
                                     aircraftIcaoCode = aircraftIcaoCode.replace(reg, "").trimmed().toUpper();
                                     if (CAircraftIcaoCode::isValidDesignator(aircraftIcaoCode))
                                     {
diff --git a/src/blackcore/vatsim/vatsimstatusfilereader.cpp b/src/blackcore/vatsim/vatsimstatusfilereader.cpp
index db18273cc..a6e154547 100644
--- a/src/blackcore/vatsim/vatsimstatusfilereader.cpp
+++ b/src/blackcore/vatsim/vatsimstatusfilereader.cpp
@@ -20,7 +20,6 @@
 #include <QList>
 #include <QMetaObject>
 #include <QNetworkReply>
-#include <QRegExp>
 #include <QScopedPointer>
 #include <QScopedPointerDeleteLater>
 #include <QString>
diff --git a/src/blackgui/components/flightplancomponent.cpp b/src/blackgui/components/flightplancomponent.cpp
index de68c03ab..46a37bae5 100644
--- a/src/blackgui/components/flightplancomponent.cpp
+++ b/src/blackgui/components/flightplancomponent.cpp
@@ -37,7 +37,7 @@
 #include <QPlainTextEdit>
 #include <QPushButton>
 #include <QRadioButton>
-#include <QRegExp>
+#include <QRegularExpression>
 #include <QTabBar>
 #include <QCompleter>
 #include <Qt>
@@ -270,9 +270,9 @@ namespace BlackGui
                 flightPlan.setTakeoffTimePlanned(v);
             }
 
-            static const QRegExp withUnit("\\D+");
+            thread_local const QRegularExpression withUnit("\\D+");
             v = ui->le_CrusingAltitude->text().trimmed();
-            if (!v.isEmpty() && withUnit.indexIn(v) < 0)
+            if (!v.isEmpty() && !withUnit.match(v).hasMatch())
             {
                 v += "ft";
                 ui->le_CrusingAltitude->setText(v);
diff --git a/src/blackgui/components/settingssimulatorbasicscomponent.cpp b/src/blackgui/components/settingssimulatorbasicscomponent.cpp
index 7d2c3bce8..a15ccd24f 100644
--- a/src/blackgui/components/settingssimulatorbasicscomponent.cpp
+++ b/src/blackgui/components/settingssimulatorbasicscomponent.cpp
@@ -13,6 +13,8 @@
 #include "blackmisc/logmessage.h"
 #include "blackconfig/buildconfig.h"
 
+#include <QRegularExpression>
+
 using namespace BlackMisc;
 using namespace BlackMisc::Simulation;
 using namespace BlackMisc::Simulation::FsCommon;
@@ -176,7 +178,7 @@ namespace BlackGui
             const QString raw = rawString.trimmed();
             if (raw.isEmpty()) { return QStringList(); }
             QStringList dirs;
-            const QStringList rawLines = raw.split(QRegExp("\n|\r\n|\r"));
+            const QStringList rawLines = raw.split(QRegularExpression("\n|\r\n|\r"));
             for (const QString &l : rawLines)
             {
                 const QString normalized = CFileUtils::normalizeFilePathToQtStandard(l);
diff --git a/src/blackgui/components/weathercomponent.cpp b/src/blackgui/components/weathercomponent.cpp
index d0231c766..2534383c7 100644
--- a/src/blackgui/components/weathercomponent.cpp
+++ b/src/blackgui/components/weathercomponent.cpp
@@ -229,10 +229,10 @@ namespace BlackGui
 
         void CWeatherComponent::setupInputValidators()
         {
-            QRegExp reIcaoOrLatitude("^[a-zA-Z]{4}|-?\\d{1,2}[,.]?\\d+$", Qt::CaseInsensitive);
-            ui->le_LatOrIcao->setValidator(new QRegExpValidator(reIcaoOrLatitude, this));
-            QRegExp reLongitude("^-?\\d{1,2}[,.]?\\d+$", Qt::CaseInsensitive);
-            ui->le_Lon->setValidator(new QRegExpValidator(reLongitude, this));
+            QRegularExpression reIcaoOrLatitude("^[a-zA-Z]{4}|-?\\d{1,2}[,.]?\\d+$", QRegularExpression::CaseInsensitiveOption);
+            ui->le_LatOrIcao->setValidator(new QRegularExpressionValidator(reIcaoOrLatitude, this));
+            QRegularExpression reLongitude("^-?\\d{1,2}[,.]?\\d+$", QRegularExpression::CaseInsensitiveOption);
+            ui->le_Lon->setValidator(new QRegularExpressionValidator(reLongitude, this));
         }
 
         void CWeatherComponent::setupCompleter()
diff --git a/src/blackgui/guiapplication.cpp b/src/blackgui/guiapplication.cpp
index cdfb518ec..d50d505d2 100644
--- a/src/blackgui/guiapplication.cpp
+++ b/src/blackgui/guiapplication.cpp
@@ -39,7 +39,7 @@
 #include <QMenu>
 #include <QMessageBox>
 #include <QProcess>
-#include <QRegExp>
+#include <QRegularExpression>
 #include <QSplashScreen>
 #include <QStyleFactory>
 #include <QStringList>
@@ -244,7 +244,7 @@ namespace BlackGui
                         html += "</td></tr>\n";
                     }
                     html += "<tr><td>";
-                    static const QRegExp reg("[ ]{2,}");
+                    thread_local const QRegularExpression reg("[ ]{2,}");
                     html += lt.replace(reg, "</td><td>");
                     pendingTr = true;
                 }
diff --git a/src/blackgui/stylesheetutility.cpp b/src/blackgui/stylesheetutility.cpp
index 62219f3cd..e2dad59b2 100644
--- a/src/blackgui/stylesheetutility.cpp
+++ b/src/blackgui/stylesheetutility.cpp
@@ -21,7 +21,7 @@
 #include <QFlags>
 #include <QFont>
 #include <QIODevice>
-#include <QRegExp>
+#include <QRegularExpression>
 #include <QStyleOption>
 #include <QStylePainter>
 #include <QTextStream>
@@ -101,9 +101,8 @@ namespace BlackGui
     {
         const QString s = this->style(fileNameFonts()).toLower();
         if (!s.contains("color:")) return "red";
-        QRegExp rx("color:\\s*(#*\\w+);");
-        rx.indexIn(s);
-        const QString c = rx.cap(1);
+        thread_local const QRegularExpression rx("color:\\s*(#*\\w+);");
+        const QString c = rx.match(s).captured(1);
         return c.isEmpty() ? "red" : c;
     }
 
diff --git a/src/blackmisc/aviation/callsign.cpp b/src/blackmisc/aviation/callsign.cpp
index 932944abf..563c34c91 100644
--- a/src/blackmisc/aviation/callsign.cpp
+++ b/src/blackmisc/aviation/callsign.cpp
@@ -10,7 +10,6 @@
 #include "blackmisc/aviation/callsign.h"
 #include "blackmisc/compare.h"
 
-#include <QRegExp>
 #include <QRegularExpression>
 #include <QRegularExpressionMatch>
 #include <QStringList>
@@ -126,10 +125,10 @@ namespace BlackMisc
             if (this->m_callsign.length() < 3) { return ""; }
             if (this->isAtcCallsign()) { return ""; }
 
-            static const QRegExp regExp("^[A-Z]{3,}");
-            const int pos = regExp.indexIn(this->m_callsign);
-            if (pos < 0) { return ""; }
-            const QString airline = regExp.cap(0);
+            thread_local const QRegularExpression regExp("^[A-Z]{3,}");
+            QRegularExpressionMatch match = regExp.match(this->m_callsign);
+            if (!match.hasMatch()) { return QString(); }
+            const QString airline = match.captured(0);
             if (airline.length() == 3) { return airline; } // we allow 3 letters
             if (airline.length() == 4 && airline.startsWith('V')) { return airline; } // we allow virtual 4 letter codes, e.g. VDLD
             return ""; // invalid
diff --git a/src/blackmisc/aviation/transponder.cpp b/src/blackmisc/aviation/transponder.cpp
index 8857d7a40..f7d2e5bac 100644
--- a/src/blackmisc/aviation/transponder.cpp
+++ b/src/blackmisc/aviation/transponder.cpp
@@ -11,7 +11,7 @@
 #include "blackmisc/propertyindex.h"
 #include "blackmisc/variant.h"
 
-#include <QRegExp>
+#include <QRegularExpression>
 #include <Qt>
 #include <QtDebug>
 
@@ -131,8 +131,8 @@ namespace BlackMisc
             qint32 tc = transponderCode.toInt(&number);
             if (!number) return false;
             if (tc < 0 || tc > 7777) return false;
-            QRegExp rx("[0-7]{1,4}");
-            return rx.exactMatch(transponderCode);
+            thread_local const QRegularExpression rx("^[0-7]{1,4}$");
+            return rx.match(transponderCode).hasMatch();
         }
 
         bool CTransponder::isValidTransponderCode(qint32 transponderCode)
diff --git a/src/blackmisc/countrylist.cpp b/src/blackmisc/countrylist.cpp
index 0363eb625..a36fe4263 100644
--- a/src/blackmisc/countrylist.cpp
+++ b/src/blackmisc/countrylist.cpp
@@ -12,6 +12,7 @@
 
 #include <QJsonObject>
 #include <QJsonValue>
+#include <QRegularExpression>
 #include <Qt>
 
 namespace BlackMisc
@@ -33,9 +34,9 @@ namespace BlackMisc
     {
         if (countryName.isEmpty()) { return CCountry(); }
 
-        static const QRegExp reg("^[a-z]+", Qt::CaseInsensitive);
-        int pos = reg.indexIn(countryName);
-        const QString cn(pos >= 0 ? reg.cap(0) : countryName);
+        thread_local const QRegularExpression reg("^[a-z]+", QRegularExpression::CaseInsensitiveOption);
+        QRegularExpressionMatch match = reg.match(countryName);
+        const QString cn(match.hasMatch() ? match.captured(0) : countryName);
         CCountryList countries = this->findBy([&](const CCountry & country)
         {
             return country.matchesCountryName(cn);
diff --git a/src/blackmisc/db/datastoreutility.cpp b/src/blackmisc/db/datastoreutility.cpp
index 1713d071d..35611912a 100644
--- a/src/blackmisc/db/datastoreutility.cpp
+++ b/src/blackmisc/db/datastoreutility.cpp
@@ -20,7 +20,6 @@
 #include <QJsonDocument>
 #include <QJsonObject>
 #include <QJsonValue>
-#include <QRegExp>
 #include <QTimeZone>
 
 using namespace BlackMisc;
diff --git a/src/blackmisc/db/distribution.cpp b/src/blackmisc/db/distribution.cpp
index bc20b48d7..0565973f4 100644
--- a/src/blackmisc/db/distribution.cpp
+++ b/src/blackmisc/db/distribution.cpp
@@ -8,6 +8,7 @@
  */
 
 #include "distribution.h"
+#include <QRegularExpression>
 #include <QStringBuilder>
 
 using namespace BlackConfig;
@@ -230,23 +231,25 @@ namespace BlackMisc
             if (filename.isEmpty()) { return QVersionNumber(); }
 
             // swift-installer-linux-64-0.7.3_2017-03-25_11-24-50.run
-            static const QRegExp firstSegments("\\d+\\.\\d+\\.\\d+");
-            if (firstSegments.indexIn(filename) < 0)
+            thread_local const QRegularExpression firstSegments("\\d+\\.\\d+\\.\\d+");
+            QRegularExpressionMatch firstSegmentsMatch = firstSegments.match(filename);
+            if (!firstSegmentsMatch.hasMatch())
             {
                 return QVersionNumber(); // no version, invalid
             }
-            QString v = firstSegments.cap(0); // first 3 segments, like 0.9.3
+            QString v = firstSegmentsMatch.captured(0); // first 3 segments, like 0.9.3
             if (!v.endsWith('.')) { v += '.'; }
 
-            static const QRegExp ts1("\\d{4}.?\\d{2}.?\\d{2}.?\\d{2}.?\\d{2}.?\\d{2}");
-            if (ts1.indexIn(filename) < 0)
+            thread_local const QRegularExpression ts1("\\d{4}.?\\d{2}.?\\d{2}.?\\d{2}.?\\d{2}.?\\d{2}");
+            QRegularExpressionMatch ts1Match = ts1.match(filename);
+            if (!ts1Match.hasMatch())
             {
                 // version without timestamp
                 v += "0";
                 return QVersionNumber::fromString(v);
             }
 
-            const QString versionTimestampString = BlackMisc::digitOnlyString(ts1.cap(0));
+            const QString versionTimestampString = BlackMisc::digitOnlyString(ts1Match.captured(0));
             const QDateTime versionTimestamp = QDateTime::fromString(versionTimestampString, "yyyyMMddHHmmss");
             const QString lastSegment = QString::number(CBuildConfig::buildTimestampAsVersionSegment(versionTimestamp));
 
diff --git a/src/blackmisc/geo/earthangle.cpp b/src/blackmisc/geo/earthangle.cpp
index aa80e6a5a..b624eb642 100644
--- a/src/blackmisc/geo/earthangle.cpp
+++ b/src/blackmisc/geo/earthangle.cpp
@@ -12,7 +12,7 @@
 #include "blackmisc/geo/latitude.h"
 #include "blackmisc/geo/longitude.h"
 
-#include <QRegExp>
+#include <QRegularExpression>
 #include <Qt>
 #include <QtGlobal>
 #include <QtMath>
@@ -72,7 +72,7 @@ namespace BlackMisc
         {
             // http://www.regular-expressions.info/floatingpoint.html
             const QString wgs = wgsCoordinate.simplified().trimmed();
-            QRegExp rx("([-+]?[0-9]*\\.?[0-9]+)");
+            thread_local const QRegularExpression rx("([-+]?[0-9]*\\.?[0-9]+)");
             qint32 deg = 0;
             qint32 min = 0;
             double sec = 0.0;
@@ -80,10 +80,11 @@ namespace BlackMisc
             int fragmentLength = 0;
             int c = 0;
             int pos = 0;
-            while ((pos = rx.indexIn(wgs, pos)) != -1)
+            QRegularExpressionMatch match = rx.match(wgs, pos);
+            while (match.hasMatch())
             {
-                QString cap = rx.cap(1);
-                pos += rx.matchedLength();
+                QString cap = match.captured(1);
+                pos += match.capturedLength(1);
                 switch (c++)
                 {
                 case 0:
@@ -102,6 +103,7 @@ namespace BlackMisc
                 default:
                     break;
                 }
+                match = rx.match(wgs, pos);
             }
             if (fragmentLength > 0)
             {
diff --git a/src/blackmisc/network/networkutils.cpp b/src/blackmisc/network/networkutils.cpp
index 0ed306c28..62953a148 100644
--- a/src/blackmisc/network/networkutils.cpp
+++ b/src/blackmisc/network/networkutils.cpp
@@ -346,7 +346,7 @@ namespace BlackMisc
         {
             if (errorMessage.isEmpty()) { return errorMessage; }
             QString phpError(errorMessage);
-            static const QRegularExpression regEx("<[^>]*>");
+            thread_local const QRegularExpression regEx("<[^>]*>");
             return phpError.remove(regEx);
         }
 
diff --git a/src/blackmisc/network/textmessage.cpp b/src/blackmisc/network/textmessage.cpp
index 328d5557a..701bf9112 100644
--- a/src/blackmisc/network/textmessage.cpp
+++ b/src/blackmisc/network/textmessage.cpp
@@ -14,7 +14,7 @@
 #include "blackmisc/pq/constants.h"
 #include "blackmisc/pq/physicalquantity.h"
 
-#include <QRegExp>
+#include <QRegularExpression>
 #include <Qt>
 #include <QtGlobal>
 
@@ -176,7 +176,7 @@ namespace BlackMisc
             if (this->isEmpty()) return invalid;
             if (this->isPrivateMessage()) return invalid;
             if (this->m_message.length() > 15 || this->m_message.length() < 10) return invalid; // SELCAL AB-CD -> 12, I allow some more characters as I do not know wheter in real life it exactly matches
-            QString candidate = this->m_message.toUpper().remove(QRegExp("[^A-Z]")); // SELCALABCD
+            QString candidate = this->m_message.toUpper().remove(QRegularExpression("[^A-Z]")); // SELCALABCD
             if (candidate.length() != 10) return invalid;
             if (!candidate.startsWith("SELCAL")) return invalid;
             return candidate.right(4).toUpper();
diff --git a/src/blackmisc/pq/pqstring.cpp b/src/blackmisc/pq/pqstring.cpp
index 97959a5db..86fce5647 100644
--- a/src/blackmisc/pq/pqstring.cpp
+++ b/src/blackmisc/pq/pqstring.cpp
@@ -21,7 +21,7 @@
 #include "blackmisc/pq/units.h"
 
 #include <QLocale>
-#include <QRegExp>
+#include <QRegularExpression>
 #include <QThreadStorage>
 #include <QtDebug>
 
@@ -45,12 +45,10 @@ namespace BlackMisc
             // check
             if (vs.isEmpty()) { return v; }
 
-            static QThreadStorage<QRegExp> tsRegex;
-            if (! tsRegex.hasLocalData()) { tsRegex.setLocalData(QRegExp("([-+]?[0-9]*[\\.,]?[0-9]+)\\s*(\\D*)$")); }
-            const auto &regex = tsRegex.localData();
-
-            if (regex.indexIn(value) < 0) { return v; } // not a valid number
-            QString unit = regex.cap(2).trimmed();
+            thread_local const QRegularExpression regex("([-+]?[0-9]*[\\.,]?[0-9]+)\\s*(\\D*)$");
+            auto match = regex.match(value);
+            if (!match.hasMatch()) { return v; } // not a valid number
+            QString unit = match.captured(2).trimmed();
             QString number = QString(value).replace(unit, "");
             unit = unit.trimmed(); // trim after replace, not before