diff --git a/contrib/install-windows-dependencies.ps1 b/contrib/install-windows-dependencies.ps1
--- a/contrib/install-windows-dependencies.ps1
+++ b/contrib/install-windows-dependencies.ps1
@@ -42,10 +42,10 @@
 $PYTHON37_x64_URL = "https://www.python.org/ftp/python/3.7.2/python-3.7.2-amd64.exe"
 $PYTHON37_x64_SHA256 = "0FE2A696F5A3E481FED795EF6896ED99157BCEF273EF3C4A96F2905CBDB3AA13"
 
-$PYTHON38_x86_URL = "https://www.python.org/ftp/python/3.8.0/python-3.8.0a2.exe"
-$PYTHON38_x86_SHA256 = "013A7DDD317679FE51223DE627688CFCB2F0F1128FD25A987F846AEB476D3FEF"
-$PYTHON38_x64_URL = "https://www.python.org/ftp/python/3.8.0/python-3.8.0a2-amd64.exe"
-$PYTHON38_X64_SHA256 = "560BC6D1A76BCD6D544AC650709F3892956890753CDCF9CE67E3D7302D76FB41"
+$PYTHON38_x86_URL = "https://www.python.org/ftp/python/3.8.0/python-3.8.0b2.exe"
+$PYTHON38_x86_SHA256 = "efa37ff7a239332bd5cf8b6e6ff15e3f183da942fd8c8d3e4b6bd11fa5e07e23"
+$PYTHON38_x64_URL = "https://www.python.org/ftp/python/3.8.0/python-3.8.0b2-amd64.exe"
+$PYTHON38_x64_SHA256 = "4e151f7dfa3605e6f400a3b01acfc2517468d71afb1e20f9299149356b79d8e9"
 
 # PIP 19.0.3.
 $PIP_URL = "https://github.com/pypa/get-pip/raw/fee32c376da1ff6496a798986d7939cd51e1644f/get-pip.py"