Liquid-crystalline medium, characterised in that it has positive dielectric anisotropy and comprises one or more compounds of Formula I in which the individual radicals, on each occurrence identically or differently, and each, independently of one another, have the following meaning: denotes R 1 a H atom, an alkyl or an alkoxy group having 1 to 12 C atoms or an alkenyl or an alkenyloxy group having 2 to 12 C atoms in which one or more CH 2 groups are optionally substituted by -C≡C-, -CF 2 O-, -OCF 2 -, -CH=CH-, -O-, -CO-O- or -O-CO- in such a way that O atoms are not linked directly to one another, and in which one or more H atoms may be replaced by a halogen atom or a cycloalkyl or a cycloalkoxy group having 3 to 12 C atoms, in which one or more H atoms may be replaced by a halogen atom, preferably cyclopentyl or cyclopentyloxyl, Y 0 a H atom or CH 3, X 1 -CN, -SCN, a halogen atom or an alkyl or an alkoxy group having 1 to 3 C atoms or an alkenyl or an alkenyloxy group having 2 or 3 C atoms in which one or more H atoms are replaced by a halogen atom, and L 1 to L 4 independently of one another H or F; and one or more compounds selected from L1 and L2, in which the individual radicals, on each occurrence identically or differently, and each, independently of one another, have the following meaning: R 0 an alkyl group having 1 to 12 C atoms or an alkenyl group having 2 to 12 C atoms in which one or more CH 2 groups are optionally substituted by -C≡C-, -CF 2 O-, -OCF 2 -, -CH=CH-, -O-, -CO-O- or -O-CO- in such a way that O atoms are not linked directly to one another, and in which one or more H atoms may be replaced by a halogen atom, R 2 an alkyl group having 1 to 6 C atoms, in which one or more CH 2 groups are optionally substituted by -C≡C-, -CF 2 O-, -OCF 2 -, -CH=CH-,. -O-, -CO-O- or -O-CO- in such a way that O atoms are not linked directly to one another, and in which one or more H atoms may be replaced by a halogen atom; Y 1 and Y 2 H, F or Cl, Y 0 H or CH 3 in which the individual radicals, on each occurrence identically or differently, and each, independently of one another, have the following meaning: R 0 an alkyl group having 1 to 12 C atoms or an alkenyl group having 2 to 12 C atoms in which one or more CH 2 groups are optionally substituted by -C≡C-, -CF 2 O-, -OCF 2 -, -CH=CH-, -O-, -CO-O- or -O-CO- in such a way that O atoms are not linked directly to one another, and in which one or more H atoms may be replaced by a halogen atom, X 2 a F atom or an alkyl or an alkoxy group having 1 to 6 C atoms or an alkenyl or an alkenyloxy group having 2 to 6 C atoms in which one or more H atoms are replaced by a F atom, Y 1 and Y 2 H, F or Cl, Y 0 H or CH 3. R 1 a H atom, an alkyl or an alkoxy group having 1 to 12 C atoms or an alkenyl or an alkenyloxy group having 2 to 12 C atoms in which one or more CH 2 groups are optionally substituted by -C≡C-, -CF 2 O-, -OCF 2 -, -CH=CH-, -O-, -CO-O- or -O-CO- in such a way that O atoms are not linked directly to one another, and in which one or more H atoms may be replaced by a halogen atom or a cycloalkyl or a cycloalkoxy group having 3 to 12 C atoms, in which one or more H atoms may be replaced by a halogen atom, preferably cyclopentyl or cyclopentyloxyl, Y 0 a H atom or CH 3, X 1 -CN, -SCN, a halogen atom or an alkyl or an alkoxy group having 1 to 3 C atoms or an alkenyl or an alkenyloxy group having 2 or 3 C atoms in which one or more H atoms are replaced by a halogen atom, and L 1 to L 4 independently of one another H or F; R 0 an alkyl group having 1 to 12 C atoms or an alkenyl group having 2 to 12 C atoms in which one or more CH 2 groups are optionally substituted by -C≡C-, -CF 2 O-, -OCF 2 -, -CH=CH-, -O-, -CO-O- or -O-CO- in such a way that O atoms are not linked directly to one another, and in which one or more H atoms may be replaced by a halogen atom, R 2 an alkyl group having 1 to 6 C atoms, in which one or more CH 2 groups are optionally substituted by -C≡C-, -CF 2 O-, -OCF 2 -, -CH=CH-,. -O-, -CO-O- or -O-CO- in such a way that O atoms are not linked directly to one another, and in which one or more H atoms may be replaced by a halogen atom; Y 1 and Y 2 H, F or Cl, Y 0 H or CH 3 R 0 an alkyl group having 1 to 12 C atoms or an alkenyl group having 2 to 12 C atoms in which one or more CH 2 groups are optionally substituted by -C≡C-, -CF 2 O-, -OCF 2 -, -CH=CH-, -O-, -CO-O- or -O-CO- in such a way that O atoms are not linked directly to one another, and in which one or more H atoms may be replaced by a halogen atom, X 2 a F atom or an alkyl or an alkoxy group having 1 to 6 C atoms or an alkenyl or an alkenyloxy group having 2 to 6 C atoms in which one or more H atoms are replaced by a F atom, Y 1 and Y 2 H, F or Cl, Y 0 H or CH 3.