diff --git a/snap/snapcraft.yaml b/snap/snapcraft.yaml
index 96b9b28540190b76770a89e9f08169dc7d52fb78..90c09a4a6958b606987a40fc53c40575c47b76dc 100644
--- a/snap/snapcraft.yaml
+++ b/snap/snapcraft.yaml
@@ -75,6 +75,7 @@ parts:
       - libxml-parser-perl
       - libxslt1-dev
       - ragel
+      - libgmock-dev
     stage-packages:
 #       NOTE: Most dependencies are already provided by "extension: gnome" (see later).
       - libboost-filesystem1.83.0