diff --git a/modules/pythia8/CMakeLists.txt b/modules/pythia8/CMakeLists.txt
index ec04fc3e4ebf825430651262d29514feb163554b..5c7e275280a32bf94c574443995fa7d6d986adfd 100644
--- a/modules/pythia8/CMakeLists.txt
+++ b/modules/pythia8/CMakeLists.txt
@@ -50,14 +50,14 @@ if ("x_${USE_Pythia8_C8}" STREQUAL "x_SYSTEM")
 
 else ()
 
-  set (_C8_Pythia8_VERSION "8310")
+  set (_C8_Pythia8_VERSION "8311")
   message (STATUS "Building modules/pythia8 using pythia${_C8_Pythia8_VERSION}.tar.bz2")
   message (STATUS "This will take a bit.....")
   # this is not a full Pythia8 install, it is a bit simplified, e.g. no pythia8-config, no examples
   # and also, it is fitted into the normal CORSIKA8 install "include/corsika_modules/Pythia8, lib/corsika"
   ExternalProject_Add (pythia8
     URL ${CMAKE_CURRENT_SOURCE_DIR}/pythia${_C8_Pythia8_VERSION}.tar.bz2
-    URL_MD5 447cea695cadff6cbf480029886424fa
+    URL_MD5 9fb1d3882e12dfb59c299c83944dab3d
     SOURCE_DIR "${CMAKE_CURRENT_BINARY_DIR}/pythia8/source"
     INSTALL_DIR "${CMAKE_CURRENT_BINARY_DIR}/pythia8/install"
     CONFIGURE_COMMAND ./configure --prefix=${CMAKE_CURRENT_BINARY_DIR}/pythia8/install
diff --git a/modules/pythia8/pythia8310.tar.bz2 b/modules/pythia8/pythia8311.tar.bz2
similarity index 71%
rename from modules/pythia8/pythia8310.tar.bz2
rename to modules/pythia8/pythia8311.tar.bz2
index 802853c58c67d4f7a9c24cf0a767c43c954a2e1e..67f55889ab4c576eb4c156f019690053320bc381 100644
Binary files a/modules/pythia8/pythia8310.tar.bz2 and b/modules/pythia8/pythia8311.tar.bz2 differ