diff --git a/.github/autobuild/android.sh b/.github/autobuild/android.sh
index 52aaf576ea..be75d1e72e 100755
--- a/.github/autobuild/android.sh
+++ b/.github/autobuild/android.sh
@@ -32,7 +32,7 @@ COMMANDLINETOOLS_VERSION=6858069
 ANDROID_NDK_VERSION=r21d
 ANDROID_PLATFORM=android-30
 ANDROID_BUILD_TOOLS=30.0.2
-AQTINSTALL_VERSION=3.1.16
+AQTINSTALL_VERSION=3.1.18
 QT_VERSION=5.15.2
 
 # Only variables which are really needed by sub-commands are exported.
diff --git a/.github/autobuild/ios.sh b/.github/autobuild/ios.sh
index 486062c39c..211666db04 100755
--- a/.github/autobuild/ios.sh
+++ b/.github/autobuild/ios.sh
@@ -29,7 +29,7 @@ set -eu
 QT_DIR=/usr/local/opt/qt
 # The following version pinnings are semi-automatically checked for
 # updates. Verify .github/workflows/bump-dependencies.yaml when changing those manually:
-AQTINSTALL_VERSION=3.1.16
+AQTINSTALL_VERSION=3.1.18
 
 if [[ ! ${QT_VERSION:-} =~ [0-9]+\.[0-9]+\..* ]]; then
     echo "Environment variable QT_VERSION must be set to a valid Qt version"
diff --git a/.github/autobuild/mac.sh b/.github/autobuild/mac.sh
index 9a884ba9d4..3022412f94 100755
--- a/.github/autobuild/mac.sh
+++ b/.github/autobuild/mac.sh
@@ -29,7 +29,7 @@ set -eu
 QT_DIR=/opt/qt
 # The following version pinnings are semi-automatically checked for
 # updates. Verify .github/workflows/bump-dependencies.yaml when changing those manually:
-AQTINSTALL_VERSION=3.1.16
+AQTINSTALL_VERSION=3.1.18
 
 TARGET_ARCHS="${TARGET_ARCHS:-}"
 
diff --git a/.github/autobuild/windows.ps1 b/.github/autobuild/windows.ps1
index f166c444b4..0256e0bb2c 100644
--- a/.github/autobuild/windows.ps1
+++ b/.github/autobuild/windows.ps1
@@ -50,7 +50,7 @@ $DownloadCacheDir = 'C:\AutobuildCache'
 # updates. Verify .github/workflows/bump-dependencies.yaml when changing those manually:
 $Qt32Version = "5.15.2"
 $Qt64Version = "6.6.3"
-$AqtinstallVersion = "3.1.16"
+$AqtinstallVersion = "3.1.18"
 $JackVersion = "1.9.22"
 $Msvc32Version = "win32_msvc2019"
 $Msvc64Version = "win64_msvc2019_64"