diff --git a/Dockerfile b/Dockerfile
index 5ed6812..da8df39 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -8,7 +8,7 @@
 ARG DOCKER_IMAGE_VERSION=
 
 # Define software versions.
-ARG MAKEMKV_VERSION=1.18.2
+ARG MAKEMKV_VERSION=1.18.3
 
 # Define software download URLs.
 ARG MAKEMKV_OSS_URL=https://www.makemkv.com/download/makemkv-oss-${MAKEMKV_VERSION}.tar.gz