diff --git a/script/setup/osx b/script/setup/osx
index 1fb91edca..ea7079944 100755
--- a/script/setup/osx
+++ b/script/setup/osx
@@ -13,13 +13,13 @@ if ! [ ${DEPLOYMENT_TARGET} == "$(macos_version)" ]; then
   SDK_SHA1=dd228a335194e3392f1904ce49aff1b1da26ca62
 fi
 
-OPENSSL_VERSION=1.1.1a
+OPENSSL_VERSION=1.1.1c
 OPENSSL_URL=https://www.openssl.org/source/openssl-${OPENSSL_VERSION}.tar.gz
-OPENSSL_SHA1=8fae27b4f34445a5500c9dc50ae66b4d6472ce29
+OPENSSL_SHA1=71b830a077276cbeccc994369538617a21bee808
 
-PYTHON_VERSION=3.7.2
+PYTHON_VERSION=3.7.3
 PYTHON_URL=https://www.python.org/ftp/python/${PYTHON_VERSION}/Python-${PYTHON_VERSION}.tgz
-PYTHON_SHA1=0cd8e52d8ed1d0be12ac8e87a623a15df3a3b418
+PYTHON_SHA1=77fd17e15ef06a7f6c5c0eab2909dc4bd81678d6
 
 #
 # Install prerequisites.