diff --git a/learn-physics.cabal b/learn-physics.cabal
--- a/learn-physics.cabal
+++ b/learn-physics.cabal
@@ -1,5 +1,5 @@
 Name:                learn-physics
-Version:             0.6.3
+Version:             0.6.4
 Synopsis:            Haskell code for learning physics
 Description:         A library of functions for vector calculus,
                      calculation of electric field, electric flux,
@@ -38,7 +38,7 @@
                        Physics.Learn.Visual.PlotTools
                        Physics.Learn.Visual.VisTools
                        Physics.Learn.Volume
-  Build-depends:       base >= 4.7 && < 4.12,
+  Build-depends:       base >= 4.7 && < 4.13,
                        vector-space >= 0.8.4,
                        hmatrix >= 0.17,
                        gloss >= 1.8,
@@ -54,44 +54,44 @@
 Executable           learn-physics-PlaneWave
   Main-is:           examples/src/PlaneWave.hs
   Build-depends:     not-gloss >= 0.7.4,
-                     base >= 4.5 && < 4.12,
+                     base >= 4.5 && < 4.13,
                      learn-physics
 
 Executable           learn-physics-eFieldLine3D
   Main-is:           examples/src/eFieldLine3D.hs
   Build-depends:     not-gloss >= 0.7.4,
-                     base >= 4.5 && < 4.12,
+                     base >= 4.5 && < 4.13,
                      learn-physics
 
 Executable           learn-physics-LorentzForceSimulation
   Main-is:           examples/src/LorentzForceSimulation.hs
   Build-depends:     not-gloss >= 0.7.4,
                      spatial-math >= 0.2,
-                     base >= 4.5 && < 4.12,
+                     base >= 4.5 && < 4.13,
                      learn-physics
 
 Executable           learn-physics-BCircularLoop
   Main-is:           examples/src/BCircularLoop.hs
   Build-depends:     not-gloss >= 0.7.4,
-                     base >= 4.5 && < 4.12,
+                     base >= 4.5 && < 4.13,
                      learn-physics
 
 Executable           learn-physics-sunEarth
   Main-is:           examples/src/sunEarthRK4.hs
   Build-depends:     gloss >= 1.8,
-                     base >= 4.5 && < 4.12,
+                     base >= 4.5 && < 4.13,
                      learn-physics
 
 Executable           learn-physics-eFieldLine2D
   Main-is:           examples/src/eFieldLine2D.hs
   Build-depends:     gloss >= 1.8,
-                     base >= 4.5 && < 4.12,
+                     base >= 4.5 && < 4.13,
                      learn-physics
 
 Executable           learn-physics-Projectile
   Main-is:           examples/src/Projectile.hs
   Build-depends:     gnuplot >= 0.5,
-                     base >= 4.5 && < 4.12,
+                     base >= 4.5 && < 4.13,
                      learn-physics
 
 Executable           learn-physics-NMR