<s>[INST] When was the last amendment made to the age requirement for members of the Council of States? [/INST] The last amendment made to the age requirement for members of the Council of States was in 1976, when the Constitution (Forty-second Amendment) Act was passed. The change increased the minimum age from thirty years to fifty years (later reduced back to thirty years by the Constitution (Forty-fourth Amendment) Act, 1978). </s>