3 files changed, 5 insertions, 4 deletions

diff --git a/packages/base/hmatrix.cabal b/packages/base/hmatrix.cabal
index 1380a36..76e3825 100644
--- a/packages/base/hmatrix.cabal
+++ b/packages/base/hmatrix.cabal
@@ -1,5 +1,5 @@
 Name:               hmatrix
-Version:            0.19.0.0
+Version:            0.20.0.0
 License:            BSD3
 License-file:       LICENSE
 Author:             Alberto Ruiz
@@ -38,7 +38,7 @@ flag disable-default-paths
 
 library
 
-    Build-Depends:      base >= 4.8 && < 5,
+    Build-Depends:      base >= 4.9 && < 5,
                         binary,
                         array,
                         deepseq,
diff --git a/packages/base/src/Numeric/LinearAlgebra/Static.hs b/packages/base/src/Numeric/LinearAlgebra/Static.hs
index 2e05c90..e5ce4e2 100644
--- a/packages/base/src/Numeric/LinearAlgebra/Static.hs
+++ b/packages/base/src/Numeric/LinearAlgebra/Static.hs
@@ -92,7 +92,7 @@ ud1 (R (Dim v)) = v
 
 
 infixl 4 &
-(&) :: forall n . (KnownNat n, 1 <= n)
+(&) :: forall n . KnownNat n
     => R n -> ℝ -> R (n+1)
 u & x = u # (konst x :: R 1)
 
diff --git a/packages/base/stack.yaml b/packages/base/stack.yaml
index f4001c6..28fc91d 100644
--- a/packages/base/stack.yaml
+++ b/packages/base/stack.yaml
@@ -4,4 +4,5 @@ flags:
 packages:
 - '.'
 extra-deps: []
-resolver: lts-3.3
+resolver: lts-13.21
+