Preheat oven to 350 degrees F and grease an 8x4 loaf pan.
In a bowl, whisk together flour, baking soda, salt, and cinnamon.
In a separate bowl, combine pumpkin puree, sugar, eggs, vanilla, and butter until evenly mixed.
Combine the flour mixture with the pumpkin mixture and mix just until the dry ingredients are well moistened.
Fold in chocolate chips and pour into the loaf pan.
Bake for 60 to 70 minutes, or until a toothpick inserted into the middle comes out clean. Enjoy!