diff --git a/hosts/scrape/default.nix b/hosts/scrape/default.nix
index 967b4473..5cf0582b 100644
--- a/hosts/scrape/default.nix
+++ b/hosts/scrape/default.nix
@@ -196,6 +196,13 @@ in {
       '';
       inherit serviceConfig;
     };
+    scrape-criticalmass = {
+      script = ''
+        ${scraperPkgs.criticalmass}/bin/criticalmass > /tmp/criticalmass.ics
+        mv /tmp/criticalmass.ics ${config.users.users.scrape.home}/
+      '';
+      inherit serviceConfig;
+    };
   } // builtins.listToAttrs
     (map makeNodeScraper (builtins.attrNames freifunkNodes) ++
      map makeLuftScraper luftqualitaetStations
@@ -305,6 +312,11 @@ in {
       wantedBy = [ "timers.target" ];
       timerConfig.OnCalendar = "hourly";
     };
+    scrape-criticalmass = {
+      partOf = [ "scrape-criticalmass.service" ];
+      wantedBy = [ "timers.target" ];
+      timerConfig.OnCalendar = "hourly";
+    };
   } // builtins.listToAttrs
     (map makeNodeScraperTimer (builtins.attrNames freifunkNodes) ++
      (map makeLuftScraperTimer luftqualitaetStations)
diff --git a/hosts/ticker/default.nix b/hosts/ticker/default.nix
index db5771e8..9a9f174b 100644
--- a/hosts/ticker/default.nix
+++ b/hosts/ticker/default.nix
@@ -272,6 +272,10 @@
           url = "https://scrape.hq.c3d2.de/museen-dresden.ics";
           color = "#943008";
         };
+        criticalmass = {
+          url = "https://scrape.hq.c3d2.de/criticalmass.ics";
+          color = "#3FBF9F";
+        };
       };
     };
   };