diff --git a/pkgs/servers/sql/postgresql/ext/pg_bigm.nix b/pkgs/servers/sql/postgresql/ext/pg_bigm.nix
new file mode 100644
index 000000000000..2cc9d7060f6b
--- /dev/null
+++ b/pkgs/servers/sql/postgresql/ext/pg_bigm.nix
@@ -0,0 +1,32 @@
+{ stdenv, fetchurl, postgresql }:
+
+stdenv.mkDerivation rec {
+  pname = "pg_bigm";
+  version = "1.2";
+
+  src = fetchurl {
+    url = "mirror://osdn/pgbigm/66565/${pname}-${version}-20161011.tar.gz";
+    sha256 = "1jp30za4bhwlas0yrhyjs9m03b1sj63km61xnvcbnh0sizyvhwis";
+  };
+
+  buildInputs = [ postgresql ];
+
+  makeFlags = [ "USE_PGXS=1" ];
+
+  installPhase = ''
+    mkdir -p $out/bin    # For buildEnv to setup proper symlinks. See #22653
+    mkdir -p $out/{lib,share/extension}
+
+    cp *.so      $out/lib
+    cp *.sql     $out/share/extension
+    cp *.control $out/share/extension
+  '';
+
+  meta = with stdenv.lib; {
+    description = "Text similarity measurement and index searching based on bigrams";
+    homepage = "https://pgbigm.osdn.jp/";
+    maintainers = [ maintainers.marsam ];
+    platforms = postgresql.meta.platforms;
+    license = licenses.postgresql;
+  };
+}
diff --git a/pkgs/servers/sql/postgresql/packages.nix b/pkgs/servers/sql/postgresql/packages.nix
index d54b05f8744f..ebce90d34518 100644
--- a/pkgs/servers/sql/postgresql/packages.nix
+++ b/pkgs/servers/sql/postgresql/packages.nix
@@ -9,6 +9,8 @@ self: super: {
 
     pg_auto_failover = super.callPackage ./ext/pg_auto_failover.nix { };
 
+    pg_bigm = super.callPackage ./ext/pg_bigm.nix { };
+
     pg_repack = super.callPackage ./ext/pg_repack.nix { };
 
     pg_similarity = super.callPackage ./ext/pg_similarity.nix { };