diff --git a/CHANGELOG.md b/CHANGELOG.md
index b058c0d..9c1c7c5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Python Buildpack Changelog
 
+# 151 (2019-03-)
+
+Python 3.5.7 and 3.4.10 now available on all Heroku stacks.
+
 # 150 (2019-03-13)
 
 Python 2.7.16 now available on all Heroku stacks.
diff --git a/bin/default_pythons b/bin/default_pythons
index 7036aae..dbdb106 100755
--- a/bin/default_pythons
+++ b/bin/default_pythons
@@ -3,8 +3,8 @@
 DEFAULT_PYTHON_VERSION="python-3.6.8"
 LATEST_36="python-3.6.8"
 LATEST_37="python-3.7.2"
-LATEST_35="python-3.5.6"
-LATEST_34="python-3.4.9"
+LATEST_35="python-3.5.7"
+LATEST_34="python-3.4.10"
 LATEST_27="python-2.7.16"
 
 export DEFAULT_PYTHON_VERSION LATEST_37 LATEST_36 LATEST_35 LATEST_34 LATEST_27
diff --git a/builds/runtimes/python-3.4.10 b/builds/runtimes/python-3.4.10
new file mode 100755
index 0000000..4d74b89
--- /dev/null
+++ b/builds/runtimes/python-3.4.10
@@ -0,0 +1,32 @@
+#!/usr/bin/env bash
+# Build Path: /app/.heroku/python/
+
+OUT_PREFIX=$1
+BIN_DIR="$(cd "$(dirname "$0")"/../.. || exit; pwd)/bin"
+export BIN_DIR
+
+# shellcheck source=bin/utils
+source "$BIN_DIR/steps/sqlite3"
+
+sqlite3_version
+echo "Setting up SQLite3 Headers for $SQLITE3_VERSION"
+sqlite3_install "$OUT_PREFIX" "$SQLITE3_VERSION" 1
+
+echo "Building Python…"
+SOURCE_TARBALL='https://python.org/ftp/python/3.7.2/Python-3.7.2.tgz'
+curl -L $SOURCE_TARBALL | tar xz
+mv Python-3.7.2 src
+cd src
+
+./configure --prefix=$OUT_PREFIX --with-ensurepip=no
+make
+make install
+
+# Remove unneeded test directories, similar to the official Docker Python images:
+# https://github.com/docker-library/python
+find "${OUT_PREFIX}" \( -type d -a \( -name test -o -name tests \) \) -exec rm -rf '{}' +
+
+# Remove spare /
+LOCATION=${OUT_PREFIX%?}
+
+ln $LOCATION/bin/python3 $LOCATION/bin/python
diff --git a/builds/runtimes/python-3.5.7 b/builds/runtimes/python-3.5.7
new file mode 100755
index 0000000..4d74b89
--- /dev/null
+++ b/builds/runtimes/python-3.5.7
@@ -0,0 +1,32 @@
+#!/usr/bin/env bash
+# Build Path: /app/.heroku/python/
+
+OUT_PREFIX=$1
+BIN_DIR="$(cd "$(dirname "$0")"/../.. || exit; pwd)/bin"
+export BIN_DIR
+
+# shellcheck source=bin/utils
+source "$BIN_DIR/steps/sqlite3"
+
+sqlite3_version
+echo "Setting up SQLite3 Headers for $SQLITE3_VERSION"
+sqlite3_install "$OUT_PREFIX" "$SQLITE3_VERSION" 1
+
+echo "Building Python…"
+SOURCE_TARBALL='https://python.org/ftp/python/3.7.2/Python-3.7.2.tgz'
+curl -L $SOURCE_TARBALL | tar xz
+mv Python-3.7.2 src
+cd src
+
+./configure --prefix=$OUT_PREFIX --with-ensurepip=no
+make
+make install
+
+# Remove unneeded test directories, similar to the official Docker Python images:
+# https://github.com/docker-library/python
+find "${OUT_PREFIX}" \( -type d -a \( -name test -o -name tests \) \) -exec rm -rf '{}' +
+
+# Remove spare /
+LOCATION=${OUT_PREFIX%?}
+
+ln $LOCATION/bin/python3 $LOCATION/bin/python
diff --git a/test/fixtures/python3_4_fail/runtime.txt b/test/fixtures/python3_4_fail/runtime.txt
index 3b5c63e..1314c85 100644
--- a/test/fixtures/python3_4_fail/runtime.txt
+++ b/test/fixtures/python3_4_fail/runtime.txt
@@ -1 +1 @@
-python-3.4.10
+python-3.4.99
diff --git a/test/fixtures/python3_5_fail/runtime.txt b/test/fixtures/python3_5_fail/runtime.txt
index df4118a..92d15aa 100644
--- a/test/fixtures/python3_5_fail/runtime.txt
+++ b/test/fixtures/python3_5_fail/runtime.txt
@@ -1 +1 @@
-python-3.5.7
+python-3.5.99
diff --git a/test/fixtures/python3_6_fail/runtime.txt b/test/fixtures/python3_6_fail/runtime.txt
index 5c517d3..f0e0c19 100644
--- a/test/fixtures/python3_6_fail/runtime.txt
+++ b/test/fixtures/python3_6_fail/runtime.txt
@@ -1 +1 @@
-python-3.6.9
+python-3.6.99
diff --git a/test/fixtures/python3_7_fail/runtime.txt b/test/fixtures/python3_7_fail/runtime.txt
index 6f651a3..e7217e5 100644
--- a/test/fixtures/python3_7_fail/runtime.txt
+++ b/test/fixtures/python3_7_fail/runtime.txt
@@ -1 +1 @@
-python-3.7.3
+python-3.7.99