It is found by M\ossbauer measurements on ${\mathrm{V}}_{x}{\mathrm{Fe}}_{1\ensuremath{-}x}\mathrm{S}$ that the vanadium impurities profoundly affect both the crystallographic and spin-rotation transitions of iron sulfide. When the vanadium concentration is increased to 2.5% of the metal atoms, the crystallographic $\ensuremath{\alpha}$ transition proceeds an order of magnitude more rapidly than for iron sulfide, and the separation between the spin rotation and the $\ensuremath{\alpha}$-transition temperatures increases by as much as 114 K compared with that for iron sulfide. The Morin transition temperature for ${\mathrm{V}}_{0.025}$${\mathrm{Fe}}_{0.975}$S was measured as 486 K, which is 86 K higher than the $\ensuremath{\alpha}$-transition temperature. It was also found that the $\ensuremath{\alpha}$ transition for ${\mathrm{V}}_{0.025}$${\mathrm{Fe}}_{0.975}$S has a hysteresis width of 4 K.