diff --git a/pkgs/development/libraries/phonetisaurus/default.nix b/pkgs/development/libraries/phonetisaurus/default.nix
index abacfdc1cce2..9ba00833d623 100644
--- a/pkgs/development/libraries/phonetisaurus/default.nix
+++ b/pkgs/development/libraries/phonetisaurus/default.nix
@@ -7,12 +7,12 @@
 
 stdenv.mkDerivation rec {
   pname = "phonetisaurus";
-  version = "2020-07-31";
+  version = "0.9.1";
 
   src = fetchFromGitHub {
     owner = "AdolfVonKleist";
     repo = pname;
-    rev = "2831870697de5b4fbcb56a6e1b975e0e1ea10deb";
+    rev = version;
     sha256 = "1b18s5zz0l0fhqh9n9jnmgjz2hzprwzf6hx5a12zibmmam3qyriv";
   };