Declaring an IRA contribution INCREASES my owed tax !?

ok, married couple both retired in our '60s. Did taxes with TurboTax desktop and we owed like $700 for 2022 for Fed/State combined.  Wanted to see the effect of making contribution to traditional IRA.  So mocked in $2K each for my spouse &I.  Watched the computed tax go up after that was entered.

What am I missing?

We both do get pensions from former employer.  AGI $83K (pensions), taxable is $53K after deductions.