diff --git a/.azure-pipelines/posix-deps-apt.sh b/.azure-pipelines/posix-deps-apt.sh
index 4f489903ab5..e0f4ca5d8d8 100755
--- a/.azure-pipelines/posix-deps-apt.sh
+++ b/.azure-pipelines/posix-deps-apt.sh
@@ -1,3 +1,4 @@
+#!/bin/sh
 apt-get update
 
 apt-get -yq install \
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diff --git a/Lib/idlelib/idle.bat b/Lib/idlelib/idle.bat
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diff --git a/Misc/NEWS.d/next/Documentation/2019-04-02-19-23-00.bpo-36487.Jg6-MG.rst b/Misc/NEWS.d/next/Documentation/2019-04-02-19-23-00.bpo-36487.Jg6-MG.rst
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diff --git a/Modules/_decimal/tests/runall.bat b/Modules/_decimal/tests/runall.bat
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diff --git a/Modules/_testcapimodule.c b/Modules/_testcapimodule.c
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diff --git a/Modules/socketmodule.c b/Modules/socketmodule.c
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