diff --git a/Packages/Trapezoidal_decomposition/version b/Packages/Trapezoidal_decomposition/version
index d50851976c4..8a6ba1e634b 100644
--- a/Packages/Trapezoidal_decomposition/version
+++ b/Packages/Trapezoidal_decomposition/version
@@ -1 +1 @@
-1.21 (18 Apr 2002)
+1.22 (18 Apr 2002)