diff --git a/hosts/harbor/configuration.nix b/hosts/harbor/configuration.nix
index b5336ab..8bdb1cb 100644
--- a/hosts/harbor/configuration.nix
+++ b/hosts/harbor/configuration.nix
@@ -100,6 +100,7 @@
   hive.matrix.registrationSecretSopsKey = config.sops.secrets.hidden-matrix-registration-secret.name;
   hive.calibre.enable = true;
   hive.calibre.instanceFQDN = "calibre.jroeger.de";
+  hive.calibre.libraries = ["Rote Bücher" "Fiction"];
 
   # This value determines the NixOS release from which the default
   # settings for stateful data, like file locations and database versions
diff --git a/modules/services/calibre.nix b/modules/services/calibre.nix
index 6669261..48d1727 100644
--- a/modules/services/calibre.nix
+++ b/modules/services/calibre.nix
@@ -9,8 +9,24 @@
     calibre = config.services.calibre-server.package;
     calibre-user = config.services.calibre-server.user;
     calibre-group = config.services.calibre-server.group;
-    calibre-library = "${cfg.basePath}/library";
     calibre-users = "${cfg.basePath}/users.sqlite";
+    libraries = map (n: "${cfg.basePath}/${n}") cfg.libraries;
+    ensure-libs = lib.concatStrings (
+      map (l: ''
+        if [ ! -d "${l}" ]; then
+            echo "Creating Calibre libraray directory \"${l}\""
+            mkdir "${l}"
+            chown ${calibre-user}:${calibre-group} "${l}"
+        fi
+
+        if [ ! -f "${l}/metadata.db" ]; then
+            echo "Creating Calibre libraray metadata \"${l}\""
+            ${calibre}/bin/calibredb --with-library="${l}" list
+            chown -R ${calibre-user}:${calibre-group} "${l}"
+        fi
+      '')
+      libraries
+    );
   in {
     options.hive.calibre = {
       enable = lib.mkEnableOption "Enable calibre server";
@@ -31,6 +47,12 @@
         example = "calibre.example.com";
         description = "Fully qualified domain name of the calibre instance";
       };
+      libraries = lib.mkOption {
+        type = lib.types.listOf lib.types.singleLineStr;
+        example = ["library1" "private" "foo"];
+        default = ["library"];
+        description = "A list of libraries to serve. (Must be present in the base-path, will be initialized if not existing)";
+      };
     };
 
     config = lib.mkIf cfg.enable {
@@ -44,9 +66,7 @@
         host = "::1";
         port = cfg.localPort;
 
-        libraries = [
-          "${calibre-library}"
-        ];
+        inherit libraries;
       };
 
       # Virtual host for calibre
@@ -80,17 +100,7 @@
                 chown ${calibre-user}:${calibre-group} ${cfg.basePath}
             fi
 
-            if [ ! -d ${calibre-library} ]; then
-                echo "Creating Calibre libraray directory \"${calibre-library}\""
-                mkdir ${calibre-library}
-                chown ${calibre-user}:${calibre-group} ${calibre-library}
-            fi
-
-            if [ ! -f ${calibre-library}/metadata.db ]; then
-                echo "Creating Calibre libraray metadata \"${calibre-library}\""
-                ${calibre}/bin/calibredb --with-library=${calibre-library} list
-                chown -R ${calibre-user}:${calibre-group} ${calibre-library}
-            fi
+            ${ensure-libs}
           '';
 
           RemainAfterExit = true;