diff --git a/.gitignore b/.gitignore
index b2309a3..603fb95 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@
 /kan-extensions-5.1.tar.gz
 /kan-extensions-5.2.tar.gz
 /invariant-0.5.1.tar.gz
+/invariant-0.5.3.tar.gz
diff --git a/ghc-kan-extensions.spec b/ghc-kan-extensions.spec
index fd5c7a9..61ee7db 100644
--- a/ghc-kan-extensions.spec
+++ b/ghc-kan-extensions.spec
@@ -4,7 +4,7 @@
 %global pkg_name kan-extensions
 %global pkgver %{pkg_name}-%{version}
 
-%global invariant invariant-0.5.1
+%global invariant invariant-0.5.3
 %global subpkgs %{invariant}
 
 Name:           ghc-%{pkg_name}
diff --git a/sources b/sources
index e387219..253f9a5 100644
--- a/sources
+++ b/sources
@@ -1,2 +1,2 @@
 SHA512 (kan-extensions-5.2.tar.gz) = 209700c5c912ecebf2b8f5a5ef8a2b6943281a9a7181f47b99faf78c383cfe0f6054eb5fb59ed558cb55f06cae4b8e980c655c862717afd003f05ee952eca05e
-SHA512 (invariant-0.5.1.tar.gz) = 2ff9beda991ebbe70a3bc465860ccdb9a7088c2c4151498a1bddf9dd4debb26240dfa40919d934d66e9bc293709d970248f2bdb8e97927125df877b338725574
+SHA512 (invariant-0.5.3.tar.gz) = 0a488a800b0eec85e865b100e3944d5e9dd45e6c12a411f67b4ba7f40de6fe0b8e37900f72c83ec7b92033a3d15e754dc11d991ecafe18d8f257afdaf67ca9be