diff --git a/app/dictionary-tools.gradle b/app/dictionary-tools.gradle
index e1305bdd..bfa04cae 100644
--- a/app/dictionary-tools.gradle
+++ b/app/dictionary-tools.gradle
@@ -1,6 +1,13 @@
 ext.getDictionarySizes = { dictionariesDir, sizesDir ->
-	fileTree(dir: dictionariesDir).forEach {dictionary ->
+	fileTree(dir: dictionariesDir).getFiles().parallelStream().forEach {dictionary ->
 		def dictionarySize = dictionary.exists() ? dictionary.text.split("\n").length : 0
 		new File(sizesDir, "${dictionary.getName()}.size").text = dictionarySize
 	}
-}
\ No newline at end of file
+}
+
+ext.getDictionaryTimestamps = { dictionariesDir, timestampsDir ->
+	fileTree(dir: dictionariesDir).getFiles().parallelStream().forEach {dictionary ->
+		def dictionaryTimestamp = dictionary.exists() ? dictionary.lastModified() : 0
+		new File(timestampsDir, "${dictionary.getName()}.timestamp").text = dictionaryTimestamp
+	}
+}