diff --git a/manifests/Mozilla/Thunderbird-cs/78.0.yaml b/manifests/Mozilla/Thunderbird-cs/78.0.yaml
new file mode 100644
index 000000000..916810cfd
--- /dev/null
+++ b/manifests/Mozilla/Thunderbird-cs/78.0.yaml
@@ -0,0 +1,15 @@
+Id: Mozilla.Thunderbird-cs
+Version: 78.0
+Name: Thunderbird Czech
+Publisher: Mozilla
+License: Mozilla Public License Version 2.0
+LicenseUrl: https://www.mozilla.org/en-US/MPL/2.0/
+AppMoniker: Mozilla.Thunderbird-cs
+Tags: 
+Description: Mozilla Thunderbird Czech
+Homepage: https://www.thunderbird.net/cs/
+Installers:
+  - Arch: x64
+    Url: https://download-installer.cdn.mozilla.net/pub/thunderbird/releases/78.0/win64/cs/Thunderbird%20Setup%2078.0.msi
+    Sha256: 6778e294d3145e32d992fa484d8600215af93bb2380180c8015c395dc98ff79d
+    InstallerType: msi
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