diff --git a/Vagrantfile b/Vagrantfile
index 794f276b..72c0a8a8 100644
--- a/Vagrantfile
+++ b/Vagrantfile
@@ -288,7 +288,7 @@ def install_pyinstaller()
     . ~/.bash_profile
     cd /vagrant/borg
     . borg-env/bin/activate
-    pip install 'pyinstaller==5.13.2'
+    pip install 'pyinstaller==6.3.0'
   EOF
 end
 
diff --git a/scripts/msys2-install-deps b/scripts/msys2-install-deps
index ef36ae5c..b0193b94 100644
--- a/scripts/msys2-install-deps
+++ b/scripts/msys2-install-deps
@@ -1,7 +1,7 @@
 #!/bin/bash
 
 pacman -S --needed --noconfirm git mingw-w64-ucrt-x86_64-{toolchain,pkgconf,zstd,lz4,xxhash,openssl,python-msgpack,python-argon2_cffi,python-platformdirs,python,cython,python-setuptools,python-wheel,python-build,python-pkgconfig,python-packaging,python-pip}
-pip install pyinstaller
+pip install pyinstaller==6.3.0
 
 if [ "$1" = "development" ]; then
 	pacman -S --needed --noconfirm mingw-w64-ucrt-x86_64-python-{pytest,pytest-benchmark,pytest-cov,pytest-forked,pytest-xdist}