diff --git a/pkg/Info.plist b/pkg/Info.plist
index 70f94767..6f496eec 100644
--- a/pkg/Info.plist
+++ b/pkg/Info.plist
@@ -18,5 +18,7 @@
 	<string>org.speedcrunch</string>
 	<key>CFBundleShortVersionString</key>
 	<string>0.12</string>
+	<key>LSMinimumSystemVersion</key>
+	<string>10.14</string>
 </dict>
 </plist>
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index c888cbaa..5ebc7dae 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -30,6 +30,15 @@ add_compile_options(-Wall -pedantic)
 
 if(APPLE)
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++")
+
+    option(UNIVERSAL_SPEEDCRUNCH "Build universal binary for both Intel and Apple Silicon" OFF)
+    if(UNIVERSAL_SPEEDCRUNCH)
+        set(CMAKE_OSX_ARCHITECTURES "x86_64;arm64" CACHE STRING " architectures" FORCE)
+    endif()
+
+    if(NOT CMAKE_OSX_DEPLOYMENT_TARGET)
+        set(CMAKE_OSX_DEPLOYMENT_TARGET "10.14" CACHE STRING "Minimum macOS version")
+    endif()
 endif()
 
 set(speedcrunch_VERSION "master")
diff --git a/src/math/rational.h b/src/math/rational.h
index dfda4438..21aadaec 100644
--- a/src/math/rational.h
+++ b/src/math/rational.h
@@ -66,4 +66,9 @@ class Rational
     double toDouble() const;
 };
 
+inline unsigned int qHash(const Rational& r)
+{
+    return qHash(r.numerator()) ^ qHash(r.denominator());
+}
+
 #endif // RATIONAL_H
diff --git a/src/speedcrunch.pro b/src/speedcrunch.pro
index 5ea04f37..68262eb3 100644
--- a/src/speedcrunch.pro
+++ b/src/speedcrunch.pro
@@ -53,7 +53,7 @@ macx {
     ICON = resources/speedcrunch.icns
     QMAKE_INFO_PLIST = ../pkg/Info.plist
     TARGET = SpeedCrunch
-    QMAKE_MACOSX_DEPLOYMENT_TARGET = 10.8
+    QMAKE_MACOSX_DEPLOYMENT_TARGET = 10.14
     QMAKE_CXXFLAGS += -std=c++17
 }