diff --git a/.ExternalSource/lua-5.1.5.tar.gz.md5 b/.ExternalSource/lua-5.1.5.tar.gz.md5
deleted file mode 100644
index ee0c8a6ec..000000000
--- a/.ExternalSource/lua-5.1.5.tar.gz.md5
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-2e115fe26e435e33b0d5c022e4490567
\ No newline at end of file
diff --git a/.ExternalSource/swigwin-3.0.10.zip.md5 b/.ExternalSource/swigwin-3.0.10.zip.md5
deleted file mode 100644
index dad250066..000000000
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-f229724fe856aa78df6128ecfefe6e0a
\ No newline at end of file
diff --git a/.ExternalSource/virtualenv-15.0.2.tar.gz.md5 b/.ExternalSource/virtualenv-15.0.2.tar.gz.md5
deleted file mode 100644
index cd334f1b4..000000000
--- a/.ExternalSource/virtualenv-15.0.2.tar.gz.md5
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-0ed59863994daf1292827ffdbba80a63
\ No newline at end of file