diff --git a/Dockerfile b/Dockerfile
index 42e6f21..9e546ed 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,10 +4,10 @@ ARG BUILD_DATE
 ARG VCS_REF
 ARG VERSION
 
-ARG LUAROCKS_VERSION=3.8.0
+ARG LUAROCKS_VERSION=3.9.0
 ARG PROSODY_VERSION=0.12.0
 
-ARG LUAROCKS_SHA256=56ab9b90f5acbc42eb7a94cf482e6c058a63e8a1effdf572b8b2a6323a06d923
+ARG LUAROCKS_SHA256=5e840f0224891de96be4139e9475d3b1de7af3a32b95c1bdf05394563c60175f
 ARG PROSODY_DOWNLOAD_SHA256=752ff32015dac565fc3417c2196af268971c358ee066e51f5d912413580d889a
 
 LABEL luarocks.version="${LUAROCKS_VERSION}"