diff --git a/Dockerfile b/Dockerfile
index ed270eb4a..918c6876b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,9 +1,9 @@
 ARG DOCKER_VERSION=19.03.5
-ARG PYTHON_VERSION=3.7.5
-ARG BUILD_ALPINE_VERSION=3.10
+ARG PYTHON_VERSION=3.7.6
+ARG BUILD_ALPINE_VERSION=3.11
 ARG BUILD_DEBIAN_VERSION=slim-stretch
-ARG RUNTIME_ALPINE_VERSION=3.10.3
-ARG RUNTIME_DEBIAN_VERSION=stretch-20191118-slim
+ARG RUNTIME_ALPINE_VERSION=3.11.3
+ARG RUNTIME_DEBIAN_VERSION=stretch-20191224-slim
 
 ARG BUILD_PLATFORM=alpine
 
diff --git a/script/setup/osx b/script/setup/osx
index 077b5b497..00cca06cf 100755
--- a/script/setup/osx
+++ b/script/setup/osx
@@ -17,9 +17,9 @@ OPENSSL_VERSION=1.1.1d
 OPENSSL_URL=https://www.openssl.org/source/openssl-${OPENSSL_VERSION}.tar.gz
 OPENSSL_SHA1=056057782325134b76d1931c48f2c7e6595d7ef4
 
-PYTHON_VERSION=3.7.5
+PYTHON_VERSION=3.7.6
 PYTHON_URL=https://www.python.org/ftp/python/${PYTHON_VERSION}/Python-${PYTHON_VERSION}.tgz
-PYTHON_SHA1=8b0311d4cca19f0ea9181731189fa33c9f5aedf9
+PYTHON_SHA1=4642680fbf9a9a5382597dc0e9faa058fdfd94e2
 
 #
 # Install prerequisites.