diff --git a/BuildMacOSUniversalBinary.py b/BuildMacOSUniversalBinary.py
index 6dc8d39bd7..6ac9ae9e55 100755
--- a/BuildMacOSUniversalBinary.py
+++ b/BuildMacOSUniversalBinary.py
@@ -64,7 +64,7 @@ DEFAULT_CONFIG = {
 
     # Minimum macOS version for each architecture slice
     "arm64_mac_os_deployment_target":  "11.0.0",
-    "x86_64_mac_os_deployment_target": "10.14.0",
+    "x86_64_mac_os_deployment_target": "10.15.0",
 
     # CMake Generator to use for building
     "generator": "Unix Makefiles",
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 799ddcb238..8619362758 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -16,7 +16,7 @@ endif()
 
 # Minimum OS X version.
 # This is inserted into the Info.plist as well.
-set(CMAKE_OSX_DEPLOYMENT_TARGET "10.14.0" CACHE STRING "")
+set(CMAKE_OSX_DEPLOYMENT_TARGET "10.15.0" CACHE STRING "")
 
 set(CMAKE_USER_MAKE_RULES_OVERRIDE "CMake/FlagsOverride.cmake")
 
diff --git a/Readme.md b/Readme.md
index c3d3d21310..7723fc1fc0 100644
--- a/Readme.md
+++ b/Readme.md
@@ -15,7 +15,7 @@ Please read the [FAQ](https://dolphin-emu.org/docs/faq/) before using Dolphin.
 * OS
     * Windows (10 or higher).
     * Linux.
-    * macOS (10.14 Mojave or higher).
+    * macOS (10.15 Catalina or higher).
     * Unix-like systems other than Linux are not officially supported but might work.
 * Processor
     * A CPU with SSE2 support.