diff --git a/forsyde-shallow.cabal b/forsyde-shallow.cabal
--- a/forsyde-shallow.cabal
+++ b/forsyde-shallow.cabal
@@ -1,11 +1,11 @@
 name:           forsyde-shallow
-version:        3.4.0.0
-cabal-version:  >= 1.8
+version:        3.4.0.1
+cabal-version:  >= 1.10
 build-type:     Simple
 license:        BSD3
 license-file:   LICENSE
 author:         ForSyDe Group, KTH/EECS/ELE
-copyright:      Copyright (c) 2003-2018 ForSyDe Group, KTH/EECS/ELE
+copyright:      Copyright (c) 2003-2021 ForSyDe Group, KTH/EECS/ELE
 maintainer:     ForSyDe Group <forsyde-dev@eecs.kth.se>
 homepage:       http://forsyde.ict.kth.se/
 stability:      alpha
@@ -22,6 +22,7 @@
               , GHC==8.0.2
               , GHC==8.2.1
               , GHC==8.4.4
+              , GHC==8.10.3
 
 -- In order to include all this files with sdist
 extra-source-files: LICENSE,
@@ -33,7 +34,7 @@
   location: git://github.com/forsyde/forsyde-shallow
 
 Library
-  build-depends:   base>=4 && <6,
+  build-depends:   base>=4.6 && <6,
                    directory,
                    old-time,
                    process,
@@ -71,6 +72,7 @@
   other-modules:
       Paths_forsyde_shallow
   ghc-options:	-Wall -fno-warn-name-shadowing
+  default-language: Haskell2010
 
 
 Test-Suite unit
@@ -81,6 +83,7 @@
                 , forsyde-shallow
                 , hspec >= 2.2.4
   ghc-options:  -threaded -rtsopts -with-rtsopts=-N
+  default-language: Haskell2010
   other-modules:
       Paths_forsyde_shallow
 
@@ -89,6 +92,7 @@
   hs-source-dirs:   test
   main-is:          TestDocs.hs
   ghc-options:      -threaded -isrc
+  default-language: Haskell2010
   build-depends:    base>=4.6 && <6
                   , doctest >= 0.8
                   , forsyde-shallow
@@ -99,7 +103,8 @@
   type:             exitcode-stdio-1.0
   hs-source-dirs:   test
   main-is:          Props.hs
-  ghc-options:      -threaded 
+  ghc-options:      -threaded
+  default-language: Haskell2010
   build-depends:    base>=4.6 && <6
                   , QuickCheck
                   , forsyde-shallow  
diff --git a/src/ForSyDe/Shallow/Utility/Gaussian.hs b/src/ForSyDe/Shallow/Utility/Gaussian.hs
--- a/src/ForSyDe/Shallow/Utility/Gaussian.hs
+++ b/src/ForSyDe/Shallow/Utility/Gaussian.hs
@@ -19,7 +19,7 @@
 import ForSyDe.Shallow.MoC.Untimed
 import ForSyDe.Shallow.Core.Signal
 
-import System.Random
+import qualified System.Random
 
 -- |To generate an infinite Signal of Gaussian values
 pGaussianNoise:: Double -- Mean value of the Gaussian noise
@@ -33,15 +33,15 @@
     gaussianXY _  = error "gaussianXY: unexpected pattern."
 
 -- |To get a uniform random variable in the range [0, 1]
-uniform :: (Fractional a, RandomGen g, Random a) => 
+uniform :: (Fractional a, System.Random.RandomGen g, System.Random.Random a) => 
   g -> (a, g)
-uniform rGen = randomR (0.0,1.0) rGen
+uniform rGen = System.Random.randomR (0.0,1.0) rGen
 
 -- |To generate an infinite signal of unit normal random variables,
 -- with the specified seed
 pUnitNormXY :: Int     -- The seed
      -> Signal Double  -- The infinite ouput signal
-pUnitNormXY = mapU 3 unitNormXY . signal . svGenerator . mkStdGen
+pUnitNormXY = mapU 3 unitNormXY . signal . svGenerator . System.Random.mkStdGen
   where
     unitNormXY [s, v1, v2] = [sqrt(-2 * log(s) / s) * v1,
           sqrt(-2 * log(s) / s) * v2]
@@ -49,7 +49,7 @@
 
 
 -- |To generate the s, v1, v2 value
-svGenerator :: StdGen -> [Double]
+svGenerator :: System.Random.StdGen -> [Double]
 svGenerator s
     | sVal >=1 = []++ svGenerator newStdG
     | otherwise = svVal ++ svGenerator newStdG
@@ -58,7 +58,7 @@
     svVal = fst svGen1
     sVal = head svVal
     newStdG = snd svGen1
-    svHelper :: StdGen -> ([Double], StdGen)
+    svHelper :: System.Random.StdGen -> ([Double], System.Random.StdGen)
     svHelper stdG = ([s, v1, v2], sNew2)
       where
         (u1, sNew1) = uniform stdG