diff --git a/repo2docker/buildpacks/julia/julia_project.py b/repo2docker/buildpacks/julia/julia_project.py
index 82c28c64..0d039aae 100644
--- a/repo2docker/buildpacks/julia/julia_project.py
+++ b/repo2docker/buildpacks/julia/julia_project.py
@@ -32,6 +32,7 @@ class JuliaProjectTomlBuildPack(PythonBuildPack):
         "1.5.0",
         "1.5.1",
         "1.5.2",
+        "1.5.3",
     ]
 
     @property