Use of boronic acids of the general formula (I) for increasing the storage stability of epoxy resin compositions, comprising an epoxy resin and a curing agent for curing the epoxy resin, wherein formula (I) represents: wherein radical R 1 means: R 1 = alkyl, hydroxyalkyl or a radical of formula (II), wherein formula (II) is: wherein R 2 , R 3 , R 4 independently of one another mean and at least one radical R 2 , R 3 , R 4 is not hydrogen: R 2 , R 3 , R 4 = hydrogen, fluorine, chlorine, bromine, iodine, cyano, C 1 to C 5 alkyl, alkoxy, acyl, alkylsulfonyl, aryl, carboxyl, or B(OH) 2 , wherein the epoxy resin composition comprises, as a curing agent, a curing agent according to formula (III), wherein formula (III) is: wherein R 6 , R 7 , R 8 independently of one another mean: R 6 , R 7 = independently of one another hydrogen or C 1 to C 5 alkyl, R 8 = C 1 to C 15 alkyl substituted with -NHC(O)NR 6 R 7 , C 3 to C 15 cycloalkyl substituted with -NHC(O)NR 6 R 7 , aryl substituted with -NHC(O)NR 6 R 7 or alkylaryl substituted with -NHC(O)NR 6 R 7 , and wherein the epoxy resin composition does not comprise, in addition to the curing agent according to general formula (III), a curing agent selected from the group consisting of cyanamide, guanidines, cyanoguanidines, nitroguanidines, acylguanidines, biguanidines and a curing agent according to general formula (IV), wherein formula (IV) is as follows wherein radicals R 40 , R 41 , R 42 independentlyly of one another mean: R 40 = cyano, nitro, acyl or a radical of the formula -(C=X)-R 43 , with X = imino or oxygen, R 43 = amino, alkylamino or alkoxy, R 41 = hydrogen, C 1 to C 5 alkyl, aryl, benzyl, or acyl, R 42 = hydrogen or C 1 to C 5 alkyl. wherein radical R 1 means: R 1 = alkyl, hydroxyalkyl or a radical of formula (II), wherein formula (II) is: R 1 = alkyl, hydroxyalkyl or a radical of formula (II), wherein formula (II) is: wherein R 2 , R 3 , R 4 independently of one another mean and at least one radical R 2 , R 3 , R 4 is not hydrogen: R 2 , R 3 , R 4 = hydrogen, fluorine, chlorine, bromine, iodine, cyano, C 1 to C 5 alkyl, alkoxy, acyl, alkylsulfonyl, aryl, carboxyl, or B(OH) 2 , R 2 , R 3 , R 4 = hydrogen, fluorine, chlorine, bromine, iodine, cyano, C 1 to C 5 alkyl, alkoxy, acyl, alkylsulfonyl, aryl, carboxyl, or B(OH) 2 , wherein the epoxy resin composition comprises, as a curing agent, a curing agent according to formula (III), wherein formula (III) is: wherein R 6 , R 7 , R 8 independently of one another mean: R 6 , R 7 = independently of one another hydrogen or C 1 to C 5 alkyl, R 8 = C 1 to C 15 alkyl substituted with -NHC(O)NR 6 R 7 , C 3 to C 15 cycloalkyl substituted with -NHC(O)NR 6 R 7 , aryl substituted with -NHC(O)NR 6 R 7 or alkylaryl substituted with -NHC(O)NR 6 R 7 , R 6 , R 7 = independently of one another hydrogen or C 1 to C 5 alkyl, R 8 = C 1 to C 15 alkyl substituted with -NHC(O)NR 6 R 7 , C 3 to C 15 cycloalkyl substituted with -NHC(O)NR 6 R 7 , aryl substituted with -NHC(O)NR 6 R 7 or alkylaryl substituted with -NHC(O)NR 6 R 7 , and wherein the epoxy resin composition does not comprise, in addition to the curing agent according to general formula (III), a curing agent selected from the group consisting of cyanamide, guanidines, cyanoguanidines, nitroguanidines, acylguanidines, biguanidines and a curing agent according to general formula (IV), wherein formula (IV) is as follows wherein radicals R 40 , R 41 , R 42 independentlyly of one another mean: R 40 = cyano, nitro, acyl or a radical of the formula -(C=X)-R 43 , with X = imino or oxygen, R 43 = amino, alkylamino or alkoxy, R 41 = hydrogen, C 1 to C 5 alkyl, aryl, benzyl, or acyl, R 42 = hydrogen or C 1 to C 5 alkyl. R 40 = cyano, nitro, acyl or a radical of the formula -(C=X)-R 43 , with X = imino or oxygen, R 43 = amino, alkylamino or alkoxy, X = imino or oxygen, R 43 = amino, alkylamino or alkoxy, R 41 = hydrogen, C 1 to C 5 alkyl, aryl, benzyl, or acyl, R 42 = hydrogen or C 1 to C 5 alkyl. <EOS>