The present disclosure relates to bicyclic heterocycles, and pharmaceutical compositions of the same, that are inhibitors of the FGFR3 and/or FGFR4 enzyme and are useful in the treatment of FGFR-associated diseases.本揭露涉及作為FGFR3和/或FGFR4酶之抑制劑並且在FGFR相關疾病治療中有用的雙環雜環及其醫藥組成物。