Short answer. Yes. Article 921 of the Civil Code makes it a ground for disinheritance when a spouse, through fraud, violence, intimidation, or undue influence, causes the testator to make a will or to change one already made. Intimidation to alter a will in the spouse's favor falls squarely within this ground.
What the law says
When the spouse by fraud, violence, intimidation, or undue influence cause the testator to make a will or to change one already made;
Civil Code, Article 921 — Grounds to Disinherit a Spouse. Read the full provision →
What the law says about coercion over a will
Article 921 of the Civil Code lists six grounds for disinheriting a spouse, and the third ground directly addresses manipulation of the testamentary process. It covers four forms of improper influence: fraud, violence, intimidation, and undue influence. Any one of these methods, used to cause the testator to make a will or to change one already made, constitutes sufficient cause for disinheritance. The conduct you describe — your spouse using intimidation to get you to change your will in their favor — is precisely what this provision was written to address.
The two-step response: revoke the changed will, then disinherit
If you made changes to your will under intimidation, you have two tasks. First, revoke the altered will or the portion that was changed under duress, and replace it with one that reflects your actual, freely formed intentions. A will made or changed under intimidation is voidable — it can be challenged and set aside — but you should not wait for someone else to challenge it after your death. Take control of the document now, while you can. Second, execute a new will that expressly disinherits your spouse and states the reason: that they used intimidation to cause you to change your earlier will.
Documenting the intimidation
To make the disinheritance hold, the ground must be provable after your death. Write a contemporaneous account of what happened: when the intimidation occurred, what your spouse said or did, how it affected you, and what changes you made to the will as a result. If there were witnesses, note their names. Keep any messages, recordings, or other evidence of the threats or pressure. This documentation does not go into the will itself — the will states the ground in general terms — but it is the foundation for defending the disinheritance if your spouse challenges it during probate.
Making the new will free of interference
When you execute the new will, do so in circumstances that are clearly free of your spouse's presence or influence. Have a trusted friend, family member, or adviser present if possible. The notary and witnesses will be important figures in any later challenge — their observations about your demeanor, lucidity, and freedom from apparent pressure can be decisive. A lawyer can help you execute the will in a manner that creates the strongest possible record that you acted voluntarily and with full understanding of what you were doing. That record is your protection against any claim that the disinheritance itself was the product of outside influence.