General Antonyms:
* Continuity
* Stability
* Harmony
* Order
* Smoothness
* Regularity
* Tranquility
* Peace
Specific Antonyms:
* Improvement (if the disruption is negative)
* Enhancement (if the disruption is negative)
* Progress (if the disruption is negative but leads to something better)
* Rejuvenation (if the disruption is negative but leads to something better)
* Resolution (if the disruption is a problem that is solved)
The best antonym will depend on the specific meaning of "disruption" in your sentence.