diff --git a/.gitignore b/.gitignore
index 50a128a..3d9e4b8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,3 +11,4 @@
 /MemoTrie-0.6.9.tar.gz
 /newtype-generics-0.5.3.tar.gz
 /MemoTrie-0.6.10.tar.gz
+/newtype-generics-0.6.1.tar.gz
diff --git a/ghc-MemoTrie.spec b/ghc-MemoTrie.spec
index dcf46d4..9d6eceb 100644
--- a/ghc-MemoTrie.spec
+++ b/ghc-MemoTrie.spec
@@ -4,7 +4,7 @@
 %global pkg_name MemoTrie
 %global pkgver %{pkg_name}-%{version}
 
-%global newtypegenerics newtype-generics-0.5.3
+%global newtypegenerics newtype-generics-0.6.1
 %global subpkgs %{newtypegenerics}
 
 Name:           ghc-%{pkg_name}
@@ -86,11 +86,6 @@ This package provides the Haskell %{pkg_name} profiling library.
 %setup -q -n %{pkgver} -a1
 # End cabal-rpm setup
 
-(
-cd %{newtypegenerics}
-cabal-tweak-dep-ver base '< 4.13' '< 4.15'
-)
-
 
 %build
 # Begin cabal-rpm build:
diff --git a/sources b/sources
index c9cd2ba..23b78c7 100644
--- a/sources
+++ b/sources
@@ -1,2 +1,2 @@
-SHA512 (newtype-generics-0.5.3.tar.gz) = c9eb39f7cfbab1640b25e0a3143cdd241b8f9e2c07a7483d1758b82e5bdeb4ecfea4c624ba6fc819d311572b3a314248fe46c488549246af72c3d603eeac5a50
 SHA512 (MemoTrie-0.6.10.tar.gz) = 73be7e356ad2aeef49abf43975d2e24ee8b883e12453f316366b52998637ac26d98feef34388c2a46f683027dc7132444b17a25a12d3e86748088fadf081b186
+SHA512 (newtype-generics-0.6.1.tar.gz) = 3e746c4e472ae50d9f0114f0b8a84745ae43a2d94e6602f3c1918bccfc3b00a2891696d44f96dda57ea366b0a2c97388685d186de525db27c7ada38a465cdb4e