# Update old .64 code to 1.x
**URL:** https://discourse.julialang.org/t/update-old-64-code-to-1-x/31832
**Category:** General Usage
**Created:** [December 4, 2019, 2:24am UTC](https://discourse.julialang.org/t/update-old-64-code-to-1-x/31832 "2019-12-04T02:24:16Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@theburdman](https://discourse.julialang.org/u/theburdman)
#### Post date: [December 4, 2019, 2:24am UTC](https://discourse.julialang.org/t/update-old-64-code-to-1-x/31832/1 "2019-12-04T02:24:16Z")
Hi guys,
I searched the forum, so apologies if I missed this topic. Catalina seems to not play nicely with Julia Pro .64 so I’m trying to update the code to work with 1.x but it’s been a slog. Is there a list somewhere for syntax changes related to base Julia and JuMP that could help guide me? Any way to save some frustration / time would be greatly appreciated!
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### Author:  [@StefanKarpinski](https://discourse.julialang.org/u/StefanKarpinski)
#### Post date: [December 4, 2019, 2:28am UTC](https://discourse.julialang.org/t/update-old-64-code-to-1-x/31832/2 "2019-12-04T02:28:34Z")
The suggested approach is to upgrade to 0.7 to get deprecation warnings and then upgrade to 1.x after doing that. Should be pretty straightforward—the deprecation warnings were fairly specific.
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### Author:  [@odow](https://discourse.julialang.org/u/odow)
#### Post date: [December 4, 2019, 4:06am UTC](https://discourse.julialang.org/t/update-old-64-code-to-1-x/31832/3 "2019-12-04T04:06:21Z")
Take a read of the jump documentation:
[http://www.juliaopt.org/JuMP.jl/v0.20.0/](http://www.juliaopt.org/JuMP.jl/v0.20.0/)
It has links to a summary of the changes.