diff --git a/modules/lang-painless/build.gradle b/modules/lang-painless/build.gradle
index a85f83f762526..7f37b5e76d904 100644
--- a/modules/lang-painless/build.gradle
+++ b/modules/lang-painless/build.gradle
@@ -45,7 +45,7 @@ testClusters.all {
 }
 
 dependencies {
-  api 'org.antlr:antlr4-runtime:4.5.3'
+  api 'org.antlr:antlr4-runtime:4.9.3'
   api 'org.ow2.asm:asm-util:9.2'
   api 'org.ow2.asm:asm-tree:7.2'
   api 'org.ow2.asm:asm-commons:9.2'
diff --git a/modules/lang-painless/licenses/antlr4-runtime-4.5.3.jar.sha1 b/modules/lang-painless/licenses/antlr4-runtime-4.5.3.jar.sha1
deleted file mode 100644
index 535955b7d6826..0000000000000
--- a/modules/lang-painless/licenses/antlr4-runtime-4.5.3.jar.sha1
+++ /dev/null
@@ -1 +0,0 @@
-2609e36f18f7e8d593cc1cddfb2ac776dc96b8e0
\ No newline at end of file
diff --git a/modules/lang-painless/licenses/antlr4-runtime-4.9.3.jar.sha1 b/modules/lang-painless/licenses/antlr4-runtime-4.9.3.jar.sha1
new file mode 100644
index 0000000000000..13a2367439ede
--- /dev/null
+++ b/modules/lang-painless/licenses/antlr4-runtime-4.9.3.jar.sha1
@@ -0,0 +1 @@
+81befc16ebedb8b8aea3e4c0835dd5ca7e8523a8
\ No newline at end of file