diff --git a/3.10-rc/alpine3.13/Dockerfile b/3.10-rc/alpine3.13/Dockerfile
new file mode 100644
index 000000000..9e8b0d72b
--- /dev/null
+++ b/3.10-rc/alpine3.13/Dockerfile
@@ -0,0 +1,142 @@
+#
+# NOTE: THIS DOCKERFILE IS GENERATED VIA "update.sh"
+#
+# PLEASE DO NOT EDIT IT DIRECTLY.
+#
+
+FROM alpine:3.13
+
+# ensure local python is preferred over distribution python
+ENV PATH /usr/local/bin:$PATH
+
+# http://bugs.python.org/issue19846
+# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
+ENV LANG C.UTF-8
+
+# runtime dependencies
+RUN set -eux; \
+	apk add --no-cache \
+# install ca-certificates so that HTTPS works consistently
+		ca-certificates \
+# and tzdata for PEP 615 (https://www.python.org/dev/peps/pep-0615/)
+		tzdata \
+	;
+# other runtime dependencies for Python are installed later
+
+ENV GPG_KEY A035C8C19219BA821ECEA86B64E628F8D684696D
+ENV PYTHON_VERSION 3.10.0a5
+
+RUN set -ex \
+	&& apk add --no-cache --virtual .fetch-deps \
+		gnupg \
+		tar \
+		xz \
+	\
+	&& wget -O python.tar.xz "https://www.python.org/ftp/python/${PYTHON_VERSION%%[a-z]*}/Python-$PYTHON_VERSION.tar.xz" \
+	&& wget -O python.tar.xz.asc "https://www.python.org/ftp/python/${PYTHON_VERSION%%[a-z]*}/Python-$PYTHON_VERSION.tar.xz.asc" \
+	&& export GNUPGHOME="$(mktemp -d)" \
+	&& gpg --batch --keyserver ha.pool.sks-keyservers.net --recv-keys "$GPG_KEY" \
+	&& gpg --batch --verify python.tar.xz.asc python.tar.xz \
+	&& { command -v gpgconf > /dev/null && gpgconf --kill all || :; } \
+	&& rm -rf "$GNUPGHOME" python.tar.xz.asc \
+	&& mkdir -p /usr/src/python \
+	&& tar -xJC /usr/src/python --strip-components=1 -f python.tar.xz \
+	&& rm python.tar.xz \
+	\
+	&& apk add --no-cache --virtual .build-deps  \
+		bluez-dev \
+		bzip2-dev \
+		coreutils \
+		dpkg-dev dpkg \
+		expat-dev \
+		findutils \
+		gcc \
+		gdbm-dev \
+		libc-dev \
+		libffi-dev \
+		libnsl-dev \
+		libtirpc-dev \
+		linux-headers \
+		make \
+		ncurses-dev \
+		openssl-dev \
+		pax-utils \
+		readline-dev \
+		sqlite-dev \
+		tcl-dev \
+		tk \
+		tk-dev \
+		util-linux-dev \
+		xz-dev \
+		zlib-dev \
+# add build deps before removing fetch deps in case there's overlap
+	&& apk del --no-network .fetch-deps \
+	\
+	&& cd /usr/src/python \
+	&& gnuArch="$(dpkg-architecture --query DEB_BUILD_GNU_TYPE)" \
+	&& ./configure \
+		--build="$gnuArch" \
+		--enable-loadable-sqlite-extensions \
+		--enable-optimizations \
+		--enable-option-checking=fatal \
+		--enable-shared \
+		--with-system-expat \
+		--with-system-ffi \
+		--without-ensurepip \
+	&& make -j "$(nproc)" \
+# set thread stack size to 1MB so we don't segfault before we hit sys.getrecursionlimit()
+# https://github.com/alpinelinux/aports/commit/2026e1259422d4e0cf92391ca2d3844356c649d0
+		EXTRA_CFLAGS="-DTHREAD_STACK_SIZE=0x100000" \
+		LDFLAGS="-Wl,--strip-all" \
+	&& make install \
+	&& rm -rf /usr/src/python \
+	\
+	&& find /usr/local -depth \
+		\( \
+			\( -type d -a \( -name test -o -name tests -o -name idle_test \) \) \
+			-o \( -type f -a \( -name '*.pyc' -o -name '*.pyo' -o -name '*.a' \) \) \
+		\) -exec rm -rf '{}' + \
+	\
+	&& find /usr/local -type f -executable -not \( -name '*tkinter*' \) -exec scanelf --needed --nobanner --format '%n#p' '{}' ';' \
+		| tr ',' '\n' \
+		| sort -u \
+		| awk 'system("[ -e /usr/local/lib/" $1 " ]") == 0 { next } { print "so:" $1 }' \
+		| xargs -rt apk add --no-cache --virtual .python-rundeps \
+	&& apk del --no-network .build-deps \
+	\
+	&& python3 --version
+
+# make some useful symlinks that are expected to exist
+RUN cd /usr/local/bin \
+	&& ln -s idle3 idle \
+	&& ln -s pydoc3 pydoc \
+	&& ln -s python3 python \
+	&& ln -s python3-config python-config
+
+# if this is called "PIP_VERSION", pip explodes with "ValueError: invalid truth value '<VERSION>'"
+ENV PYTHON_PIP_VERSION 21.0.1
+# https://github.com/pypa/get-pip
+ENV PYTHON_GET_PIP_URL https://github.com/pypa/get-pip/raw/4be3fe44ad9dedc028629ed1497052d65d281b8e/get-pip.py
+ENV PYTHON_GET_PIP_SHA256 8006625804f55e1bd99ad4214fd07082fee27a1c35945648a58f9087a714e9d4
+
+RUN set -ex; \
+	\
+	wget -O get-pip.py "$PYTHON_GET_PIP_URL"; \
+	echo "$PYTHON_GET_PIP_SHA256 *get-pip.py" | sha256sum -c -; \
+	\
+	python get-pip.py \
+		--disable-pip-version-check \
+		--no-cache-dir \
+		"pip==$PYTHON_PIP_VERSION" \
+	; \
+	pip --version; \
+	\
+	find /usr/local -depth \
+		\( \
+			\( -type d -a \( -name test -o -name tests -o -name idle_test \) \) \
+			-o \
+			\( -type f -a \( -name '*.pyc' -o -name '*.pyo' \) \) \
+		\) -exec rm -rf '{}' +; \
+	rm -f get-pip.py
+
+CMD ["python3"]
diff --git a/3.6/alpine3.11/Dockerfile b/3.6/alpine3.13/Dockerfile
similarity index 99%
rename from 3.6/alpine3.11/Dockerfile
rename to 3.6/alpine3.13/Dockerfile
index a9addd190..9e3c55c2f 100644
--- a/3.6/alpine3.11/Dockerfile
+++ b/3.6/alpine3.13/Dockerfile
@@ -4,7 +4,7 @@
 # PLEASE DO NOT EDIT IT DIRECTLY.
 #
 
-FROM alpine:3.11
+FROM alpine:3.13
 
 # ensure local python is preferred over distribution python
 ENV PATH /usr/local/bin:$PATH
diff --git a/3.7/alpine3.11/Dockerfile b/3.7/alpine3.13/Dockerfile
similarity index 99%
rename from 3.7/alpine3.11/Dockerfile
rename to 3.7/alpine3.13/Dockerfile
index 7e79347a7..8c5b8aae3 100644
--- a/3.7/alpine3.11/Dockerfile
+++ b/3.7/alpine3.13/Dockerfile
@@ -4,7 +4,7 @@
 # PLEASE DO NOT EDIT IT DIRECTLY.
 #
 
-FROM alpine:3.11
+FROM alpine:3.13
 
 # ensure local python is preferred over distribution python
 ENV PATH /usr/local/bin:$PATH
diff --git a/3.8/alpine3.11/Dockerfile b/3.8/alpine3.13/Dockerfile
similarity index 99%
rename from 3.8/alpine3.11/Dockerfile
rename to 3.8/alpine3.13/Dockerfile
index 88fc1740e..7cd9490b3 100644
--- a/3.8/alpine3.11/Dockerfile
+++ b/3.8/alpine3.13/Dockerfile
@@ -4,7 +4,7 @@
 # PLEASE DO NOT EDIT IT DIRECTLY.
 #
 
-FROM alpine:3.11
+FROM alpine:3.13
 
 # ensure local python is preferred over distribution python
 ENV PATH /usr/local/bin:$PATH
diff --git a/3.9/alpine3.13/Dockerfile b/3.9/alpine3.13/Dockerfile
new file mode 100644
index 000000000..8de4348de
--- /dev/null
+++ b/3.9/alpine3.13/Dockerfile
@@ -0,0 +1,142 @@
+#
+# NOTE: THIS DOCKERFILE IS GENERATED VIA "update.sh"
+#
+# PLEASE DO NOT EDIT IT DIRECTLY.
+#
+
+FROM alpine:3.13
+
+# ensure local python is preferred over distribution python
+ENV PATH /usr/local/bin:$PATH
+
+# http://bugs.python.org/issue19846
+# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
+ENV LANG C.UTF-8
+
+# runtime dependencies
+RUN set -eux; \
+	apk add --no-cache \
+# install ca-certificates so that HTTPS works consistently
+		ca-certificates \
+# and tzdata for PEP 615 (https://www.python.org/dev/peps/pep-0615/)
+		tzdata \
+	;
+# other runtime dependencies for Python are installed later
+
+ENV GPG_KEY E3FF2839C048B25C084DEBE9B26995E310250568
+ENV PYTHON_VERSION 3.9.1
+
+RUN set -ex \
+	&& apk add --no-cache --virtual .fetch-deps \
+		gnupg \
+		tar \
+		xz \
+	\
+	&& wget -O python.tar.xz "https://www.python.org/ftp/python/${PYTHON_VERSION%%[a-z]*}/Python-$PYTHON_VERSION.tar.xz" \
+	&& wget -O python.tar.xz.asc "https://www.python.org/ftp/python/${PYTHON_VERSION%%[a-z]*}/Python-$PYTHON_VERSION.tar.xz.asc" \
+	&& export GNUPGHOME="$(mktemp -d)" \
+	&& gpg --batch --keyserver ha.pool.sks-keyservers.net --recv-keys "$GPG_KEY" \
+	&& gpg --batch --verify python.tar.xz.asc python.tar.xz \
+	&& { command -v gpgconf > /dev/null && gpgconf --kill all || :; } \
+	&& rm -rf "$GNUPGHOME" python.tar.xz.asc \
+	&& mkdir -p /usr/src/python \
+	&& tar -xJC /usr/src/python --strip-components=1 -f python.tar.xz \
+	&& rm python.tar.xz \
+	\
+	&& apk add --no-cache --virtual .build-deps  \
+		bluez-dev \
+		bzip2-dev \
+		coreutils \
+		dpkg-dev dpkg \
+		expat-dev \
+		findutils \
+		gcc \
+		gdbm-dev \
+		libc-dev \
+		libffi-dev \
+		libnsl-dev \
+		libtirpc-dev \
+		linux-headers \
+		make \
+		ncurses-dev \
+		openssl-dev \
+		pax-utils \
+		readline-dev \
+		sqlite-dev \
+		tcl-dev \
+		tk \
+		tk-dev \
+		util-linux-dev \
+		xz-dev \
+		zlib-dev \
+# add build deps before removing fetch deps in case there's overlap
+	&& apk del --no-network .fetch-deps \
+	\
+	&& cd /usr/src/python \
+	&& gnuArch="$(dpkg-architecture --query DEB_BUILD_GNU_TYPE)" \
+	&& ./configure \
+		--build="$gnuArch" \
+		--enable-loadable-sqlite-extensions \
+		--enable-optimizations \
+		--enable-option-checking=fatal \
+		--enable-shared \
+		--with-system-expat \
+		--with-system-ffi \
+		--without-ensurepip \
+	&& make -j "$(nproc)" \
+# set thread stack size to 1MB so we don't segfault before we hit sys.getrecursionlimit()
+# https://github.com/alpinelinux/aports/commit/2026e1259422d4e0cf92391ca2d3844356c649d0
+		EXTRA_CFLAGS="-DTHREAD_STACK_SIZE=0x100000" \
+		LDFLAGS="-Wl,--strip-all" \
+	&& make install \
+	&& rm -rf /usr/src/python \
+	\
+	&& find /usr/local -depth \
+		\( \
+			\( -type d -a \( -name test -o -name tests -o -name idle_test \) \) \
+			-o \( -type f -a \( -name '*.pyc' -o -name '*.pyo' -o -name '*.a' \) \) \
+		\) -exec rm -rf '{}' + \
+	\
+	&& find /usr/local -type f -executable -not \( -name '*tkinter*' \) -exec scanelf --needed --nobanner --format '%n#p' '{}' ';' \
+		| tr ',' '\n' \
+		| sort -u \
+		| awk 'system("[ -e /usr/local/lib/" $1 " ]") == 0 { next } { print "so:" $1 }' \
+		| xargs -rt apk add --no-cache --virtual .python-rundeps \
+	&& apk del --no-network .build-deps \
+	\
+	&& python3 --version
+
+# make some useful symlinks that are expected to exist
+RUN cd /usr/local/bin \
+	&& ln -s idle3 idle \
+	&& ln -s pydoc3 pydoc \
+	&& ln -s python3 python \
+	&& ln -s python3-config python-config
+
+# if this is called "PIP_VERSION", pip explodes with "ValueError: invalid truth value '<VERSION>'"
+ENV PYTHON_PIP_VERSION 21.0.1
+# https://github.com/pypa/get-pip
+ENV PYTHON_GET_PIP_URL https://github.com/pypa/get-pip/raw/4be3fe44ad9dedc028629ed1497052d65d281b8e/get-pip.py
+ENV PYTHON_GET_PIP_SHA256 8006625804f55e1bd99ad4214fd07082fee27a1c35945648a58f9087a714e9d4
+
+RUN set -ex; \
+	\
+	wget -O get-pip.py "$PYTHON_GET_PIP_URL"; \
+	echo "$PYTHON_GET_PIP_SHA256 *get-pip.py" | sha256sum -c -; \
+	\
+	python get-pip.py \
+		--disable-pip-version-check \
+		--no-cache-dir \
+		"pip==$PYTHON_PIP_VERSION" \
+	; \
+	pip --version; \
+	\
+	find /usr/local -depth \
+		\( \
+			\( -type d -a \( -name test -o -name tests -o -name idle_test \) \) \
+			-o \
+			\( -type f -a \( -name '*.pyc' -o -name '*.pyo' \) \) \
+		\) -exec rm -rf '{}' +; \
+	rm -f get-pip.py
+
+CMD ["python3"]
diff --git a/generate-stackbrew-library.sh b/generate-stackbrew-library.sh
index 3ecbd925d..2b25520e3 100755
--- a/generate-stackbrew-library.sh
+++ b/generate-stackbrew-library.sh
@@ -79,7 +79,7 @@ for version in "${versions[@]}"; do
 
 	for v in \
 		{buster,stretch}{,/slim} \
-		alpine{3.12,3.11} \
+		alpine{3.13,3.12} \
 		windows/windowsservercore-{1809,ltsc2016} \
 	; do
 		dir="$version/$v"
diff --git a/update.sh b/update.sh
index 971764945..190219dcb 100755
--- a/update.sh
+++ b/update.sh
@@ -132,7 +132,7 @@ for version in "${versions[@]}"; do
 	echo "$version: $fullVersion"
 
 	for v in \
-		alpine{3.11,3.12} \
+		alpine{3.12,3.13} \
 		{stretch,buster}{/slim,} \
 		windows/windowsservercore-{1809,ltsc2016} \
 	; do