diff --git a/.cirrus.yml b/.cirrus.yml
index 6e3d2862bd..116621da27 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -7,7 +7,7 @@ env:
   BUILD_SOURCEBRANCHNAME: $CIRRUS_BRANCH
   RPCS3_TOKEN: ENCRYPTED[!a4c3850e29ab150692286a74bec29819d25971a7ec431b86de2a35f7ed90c5b2ab3c93469f9298e30924d843599110e9!]
   QT_VER_MAIN: '6'
-  QT_VER: '6.6.0'
+  QT_VER: '6.6.1'
 
 # windows_task:
 #   matrix:
@@ -21,7 +21,7 @@ env:
 #     COMPILER: msvc
 #     BUILD_ARTIFACTSTAGINGDIRECTORY: ${CIRRUS_WORKING_DIR}\artifacts\
 #     QT_VER_MSVC: 'msvc2019'
-#     QT_DATE: '202310040911'
+#     QT_DATE: '202311210527'
 #     QTDIR: C:\Qt\${QT_VER}\${QT_VER_MSVC}_64
 #     VULKAN_VER: '1.3.224.1'
 #     VULKAN_SDK_SHA: '2029e652e39ee6a6036cff3765da31e1e6c595fd2413d3cd111dfab7855621ea'
@@ -56,7 +56,7 @@ env:
 
 # linux_task:
 #   container:
-#     image: rpcs3/rpcs3-ci-focal:1.3
+#     image: rpcs3/rpcs3-ci-focal:1.4
 #     cpu: 4
 #     memory: 16G
 #   env:
diff --git a/3rdparty/qt6.cmake b/3rdparty/qt6.cmake
index 7fce290470..5619e0c68d 100644
--- a/3rdparty/qt6.cmake
+++ b/3rdparty/qt6.cmake
@@ -1,6 +1,6 @@
 add_library(3rdparty_qt6 INTERFACE)
 
-set(QT_MIN_VER 6.2.4)
+set(QT_MIN_VER 6.4.0)
 
 find_package(Qt6 ${QT_MIN_VER} CONFIG COMPONENTS Widgets Concurrent Multimedia MultimediaWidgets Svg SvgWidgets)
 if(WIN32)
diff --git a/BUILDING.md b/BUILDING.md
index 04c27e22c0..902e7ceb97 100644
--- a/BUILDING.md
+++ b/BUILDING.md
@@ -9,11 +9,11 @@ Other instructions may be found [here](https://wiki.rpcs3.net/index.php?title=Bu
 
 * [CMake 3.16.9+](https://www.cmake.org/download/) (add to PATH)
 * [Python 3.6+](https://www.python.org/downloads/) (add to PATH)
-* [Qt 6.6.0](https://www.qt.io/download-qt-installer)
+* [Qt 6.6.1](https://www.qt.io/download-qt-installer)
 * [Visual Studio 2019](https://visualstudio.microsoft.com/thank-you-downloading-visual-studio/?sku=Community)
 * [Vulkan SDK 1.3.224](https://vulkan.lunarg.com/sdk/home) (See "Install the SDK" [here](https://vulkan.lunarg.com/doc/sdk/latest/windows/getting_started.html)) for now future SDKs don't work. You need precisely 1.3.224.
 
-**Either add the** `QTDIR` **environment variable, e.g.** `<QtInstallFolder>\6.6.0\msvc2019_64\` **, or use the [Visual Studio Qt Plugin](https://marketplace.visualstudio.com/items?itemName=TheQtCompany.QtVisualStudioTools2019)**
+**Either add the** `QTDIR` **environment variable, e.g.** `<QtInstallFolder>\6.6.1\msvc2019_64\` **, or use the [Visual Studio Qt Plugin](https://marketplace.visualstudio.com/items?itemName=TheQtCompany.QtVisualStudioTools2019)**
 
 ### Linux
 
@@ -21,7 +21,7 @@ These are the essentials tools to build RPCS3 on Linux. Some of them can be inst
 
 * Clang 12+ or GCC 11+
 * [CMake 3.16.9+](https://www.cmake.org/download/)
-* [Qt 6.6.0](https://www.qt.io/download-qt-installer)
+* [Qt 6.6.1](https://www.qt.io/download-qt-installer)
 * [Vulkan SDK 1.3.224](https://vulkan.lunarg.com/sdk/home) (See "Install the SDK" [here](https://vulkan.lunarg.com/doc/sdk/latest/linux/getting_started.html)) for now future SDKs don't work. You need precisely 1.3.224.
 * [SDL2](https://github.com/libsdl-org/SDL/releases) (for the FAudio backend)
 
@@ -96,7 +96,7 @@ git submodule update --init
 #### Configuring the Qt plugin (if used)
 
 1) Go to `Extensions->Qt VS Tools->Qt Versions`.
-2) Add the path to your Qt installation with compiler e.g. `<QtInstallFolder>\6.6.0\msvc2019_64`, version will fill in automatically.
+2) Add the path to your Qt installation with compiler e.g. `<QtInstallFolder>\6.6.1\msvc2019_64`, version will fill in automatically.
 3) Go to `Extensions->Qt VS Tools->Options->Legacy Project Format`.
 4) Set `Build: Run pre-build setup` to `true`.
 
diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index 31dd694551..f7eab5f8cb 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -38,13 +38,13 @@ jobs:
     displayName: ccache
 
   - bash: |
-      docker pull --quiet rpcs3/rpcs3-ci-focal:1.3
+      docker pull --quiet rpcs3/rpcs3-ci-focal:1.4
       docker run                      \
         -v $(pwd):/rpcs3              \
         --env-file .ci/docker.env \
         -v $CCACHE_DIR:/root/.ccache  \
         -v $BUILD_ARTIFACTSTAGINGDIRECTORY:/root/artifacts \
-        rpcs3/rpcs3-ci-focal:1.3 \
+        rpcs3/rpcs3-ci-focal:1.4 \
         /rpcs3/.ci/build-linux.sh
     displayName: Docker setup and build
 
@@ -69,9 +69,9 @@ jobs:
   variables:
     COMPILER: msvc
     QT_VER_MAIN: '6'
-    QT_VER: '6.6.0'
+    QT_VER: '6.6.1'
     QT_VER_MSVC: 'msvc2019'
-    QT_DATE: '202310040911'
+    QT_DATE: '202311210527'
     QTDIR: C:\Qt\$(QT_VER)\$(QT_VER_MSVC)_64
     VULKAN_VER: '1.3.224.1'
     VULKAN_SDK_SHA: '2029e652e39ee6a6036cff3765da31e1e6c595fd2413d3cd111dfab7855621ea'
@@ -132,7 +132,7 @@ jobs:
     UPLOAD_REPO_FULL_NAME: "RPCS3/rpcs3-binaries-mac"
     RELEASE_MESSAGE: "../GitHubReleaseMessage.txt"
     ARTDIR: $(Build.ArtifactStagingDirectory)
-    QT_VER: '6.6.0'
+    QT_VER: '6.6.1'
     QT_VER_MAIN: '6'
 
   pool: