diff --git a/package/requirements-macos.txt b/package/requirements-macos.txt
index e7e7d8ee..b4598883 100644
--- a/package/requirements-macos.txt
+++ b/package/requirements-macos.txt
@@ -1,4 +1,4 @@
-pyinstaller
+pyinstaller==3.6
 pyopenssl
 pycryptodomex
 pyobjc-framework-Cocoa
\ No newline at end of file
diff --git a/package/requirements-windows.txt b/package/requirements-windows.txt
index 1a9aa4fb..a14036d4 100644
--- a/package/requirements-windows.txt
+++ b/package/requirements-windows.txt
@@ -1,4 +1,4 @@
-pyinstaller
+pyinstaller==3.6
 pyopenssl
 pycryptodomex
 pywin32
\ No newline at end of file