diff --git a/CMakeLists.txt b/CMakeLists.txt
index afa3c31..bba8f6f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,11 +5,11 @@ if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
 endif()
 
 if(${CMAKE_VERSION} VERSION_LESS "3.0.0")
-	set(PROJECT_VERSION 1.7.5)
+	set(PROJECT_VERSION 1.7.6)
 	project(iir)
 else()
 	cmake_policy(SET CMP0048 NEW) # set VERSION in project()
-	project(iir VERSION 1.7.5 LANGUAGES CXX)
+	project(iir VERSION 1.7.6 LANGUAGES CXX)
 endif()
 include(GNUInstallDirs)
 add_subdirectory(test)
diff --git a/doc/pdf/refman.pdf b/doc/pdf/refman.pdf
index e65a3be..c4fbbeb 100644
Binary files a/doc/pdf/refman.pdf and b/doc/pdf/refman.pdf differ