diff --git a/manifests/stackless/stackless/3.7.3.yaml b/manifests/stackless/stackless/3.7.3.yaml
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+# ================== General ==================
+Id: stackless.stackless
+Publisher: stackless
+Name: stackless
+Author: stackless
+Description: Stackless Python is an enhanced version of the Python programming language. It allows programmers to reap the benefits of thread-based programming without the performance and complexity problems associated with conventional threads.
+#AppMoniker: 
+Tags: stackless,python,develop,script,programming language
+FileExtensions: py
+#Protocols: 
+#Commands:
+
+# ================== License ==================
+Homepage: https://github.com/stackless-dev/stackless
+License: PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2
+LicenseUrl: https://github.com/stackless-dev/stackless/blob/master-slp/LICENSE
+
+# ================= Installer =================
+Version: 3.7.3
+InstallerType: exe
+Installers:
+  - Arch: x64
+    Url: http://www.stackless.com/binaries/MSI/3.7.3/stackless-3.7.3-amd64.exe
+    Sha256: 47cffcef3e075bc1c918f7ba64d119718bcf313fad590cc242f02c67ff77c95f
+    Switches:
+      Silent: /passive
+      SilentWithProgress: /passive  
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