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--- a/5-concept.tex
+++ b/5-concept.tex
@@ -16,7 +16,7 @@ The base topology used is shown in Figure \ref{fig:topology}.
 
 The source code of the \textit{ESPer} project is published into a \textit{Git} source code repository.
 From there, the continuous integration system is responsible for automatically building and publishing the firmware binary files, as soon as updated source code is available. 
-It is also in charge of assembling and publishing meta-information required for the update process.
+It is also in charge of assembling and publishing meta-information (version and signature) required for the update process.
 Both systems are described in detail in the following section.
 Updates to the devices firmware is either triggered actively (manual or by the CI system) or on a regular schedule by the devices themselves.
 This process is described in section \ref{flashlayout}.
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