diff --git a/plugins/ingest-attachment/build.gradle b/plugins/ingest-attachment/build.gradle
index f27560ab18579..97bc5636a803a 100644
--- a/plugins/ingest-attachment/build.gradle
+++ b/plugins/ingest-attachment/build.gradle
@@ -48,7 +48,10 @@ dependencies {
   // mandatory for tika
   api "org.apache.tika:tika-core:${versions.tika}"
   api "org.apache.tika:tika-parsers:${versions.tika}"
+  // Required for the various document parsers
   api "org.apache.tika:tika-parsers-standard-package:${versions.tika}"
+  // Required for language detection
+  api "org.apache.tika:tika-langdetect:${versions.tika}"
   api 'org.tukaani:xz:1.8'
   api 'commons-io:commons-io:2.11.0'
   api "org.slf4j:slf4j-api:${versions.slf4j}"