diff --git a/axis/utilities.styl b/axis/utilities.styl
index 00ccbde..8d666e2 100644
--- a/axis/utilities.styl
+++ b/axis/utilities.styl
@@ -339,6 +339,7 @@ ease-in-sine =      cubic-bezier(0.470,  0.000, 0.745, 0.715)
 ease-in-expo =      cubic-bezier(0.950,  0.050, 0.795, 0.035)
 ease-in-circ =      cubic-bezier(0.600,  0.040, 0.980, 0.335)
 ease-in-back =      cubic-bezier(0.600, -0.280, 0.735, 0.045)
+ease-in-swift =     cubic-bezier(0.900,  0.000, 0.450, 1.000)
 
 // ease-out
 ease-out-quad =     cubic-bezier(0.250,  0.460, 0.450, 0.940)
@@ -349,6 +350,7 @@ ease-out-sine =     cubic-bezier(0.390,  0.575, 0.565, 1.000)
 ease-out-expo =     cubic-bezier(0.190,  1.000, 0.220, 1.000)
 ease-out-circ =     cubic-bezier(0.075,  0.820, 0.165, 1.000)
 ease-out-back =     cubic-bezier(0.175,  0.885, 0.320, 1.275)
+ease-out-swift =    cubic-bezier(0.550,  0.000, 0.100, 1.000)
 
 // ease-in-out
 ease-in-out-quad =  cubic-bezier(0.455,  0.030, 0.515, 0.955)
@@ -359,6 +361,7 @@ ease-in-out-sine =  cubic-bezier(0.445,  0.050, 0.550, 0.950)
 ease-in-out-expo =  cubic-bezier(1.000,  0.000, 0.000, 1.000)
 ease-in-out-circ =  cubic-bezier(0.785,  0.135, 0.150, 0.860)
 ease-in-out-back =  cubic-bezier(0.680, -0.550, 0.265, 1.550)
+ease-in-out-swift = cubic-bezier(0.900,  0.000, 0.100, 1.000)
 
 // Function: cached-image-url
 //