iTunes doesn't recognize iPad 6
I have iTunes 12.8, and Mac OS X 10.11.6. When I connect my new iPad 6, iTunes says that I need to upgrade my Mac software. My MBP is old, and I don't want to upgrade it further. The support articles says that 10.11.4 should be sufficient. What am I missing?
MacBook Pro, OS X El Capitan (10.11.6)