diff --git a/nixos/modules/services/backup/restic.nix b/nixos/modules/services/backup/restic.nix
index 333fdd494e3b..a0de1124c661 100644
--- a/nixos/modules/services/backup/restic.nix
+++ b/nixos/modules/services/backup/restic.nix
@@ -222,6 +222,15 @@ in
             A script that must run after finishing the backup process.
           '';
         };
+
+        package = mkOption {
+          type = types.package;
+          default = pkgs.restic;
+          defaultText = literalExpression "pkgs.restic";
+          description = ''
+            Restic package to use.
+          '';
+        };
       };
     }));
     default = { };
@@ -254,7 +263,7 @@ in
         (name: backup:
           let
             extraOptions = concatMapStrings (arg: " -o ${arg}") backup.extraOptions;
-            resticCmd = "${pkgs.restic}/bin/restic${extraOptions}";
+            resticCmd = "${backup.package}/bin/restic${extraOptions}";
             filesFromTmpFile = "/run/restic-backups-${name}/includes";
             backupPaths =
               if (backup.dynamicFilesFrom == null)
diff --git a/nixos/tests/restic.nix b/nixos/tests/restic.nix
index 7523d5e5ed5d..75fffe9d9a84 100644
--- a/nixos/tests/restic.nix
+++ b/nixos/tests/restic.nix
@@ -63,6 +63,12 @@ import ./make-test-python.nix (
               inherit repository passwordFile;
               pruneOpts = [ "--keep-last 1" ];
             };
+            custompackage = {
+              inherit repository passwordFile paths;
+              package = pkgs.writeShellScriptBin "restic" ''
+                echo "$@" >> /tmp/fake-restic.log;
+              '';
+            };
           };
 
           environment.sessionVariables.RCLONE_CONFIG_LOCAL_TYPE = "local";
@@ -76,6 +82,7 @@ import ./make-test-python.nix (
           "${pkgs.restic}/bin/restic -r ${repository} -p ${passwordFile} snapshots",
           '${pkgs.restic}/bin/restic --repository-file ${repositoryFile} -p ${passwordFile} snapshots"',
           "${pkgs.restic}/bin/restic -r ${rcloneRepository} -p ${passwordFile} snapshots",
+          "grep 'backup .* /opt' /tmp/fake-restic.log",
       )
       server.succeed(
           "mkdir -p /opt",
@@ -89,6 +96,8 @@ import ./make-test-python.nix (
           '${pkgs.restic}/bin/restic -r ${repository} -p ${passwordFile} snapshots -c | grep -e "^1 snapshot"',
           '${pkgs.restic}/bin/restic --repository-file ${repositoryFile} -p ${passwordFile} snapshots -c | grep -e "^1 snapshot"',
           '${pkgs.restic}/bin/restic -r ${rcloneRepository} -p ${passwordFile} snapshots -c | grep -e "^1 snapshot"',
+          "systemctl start restic-backups-custompackage.service",
+          "grep 'backup .* /opt' /tmp/fake-restic.log",
           "timedatectl set-time '2017-12-13 13:45'",
           "systemctl start restic-backups-remotebackup.service",
           "rm /opt/backupCleanupCommand",