diff --git a/.gitignore b/.gitignore
index 38f6c37..538db90 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@ acct-6.5.4.tar.gz
 /acct-6.6.1.tar.gz
 /acct-6.6.2.tar.gz
 /acct-6.6.3.tar.gz
+/acct-6.6.4.tar.gz
diff --git a/psacct-6.6.4-lastcomm-manpage-pid-twice.patch b/psacct-6.6.4-lastcomm-manpage-pid-twice.patch
new file mode 100644
index 0000000..efa88a4
--- /dev/null
+++ b/psacct-6.6.4-lastcomm-manpage-pid-twice.patch
@@ -0,0 +1,13 @@
+diff -up ./lastcomm.1.ori ./lastcomm.1
+--- ./lastcomm.1.ori	2018-06-19 17:50:43.223211872 +0200
++++ ./lastcomm.1	2018-06-19 17:50:58.211147752 +0200
+@@ -125,9 +125,6 @@ format as your current machine, but has
+ Print paging statistics.
+ .TP
+ .B \-\-pid
+-Show PID and PPID of the process if acct version 3 format is supported by kernel.
+-.TP
+-.B \-\-pid
+ Add pid of the process and pid of the process parent to the output
+ (pid is the last but one and parent pid the last column).
+ These values are shown only when they are generated by acct function
diff --git a/sources b/sources
index de1eb1f..f2a7aff 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (acct-6.6.3.tar.gz) = 161a0c19af9cfb88689935dca0d64c94922bcf9135063349ef8c4d2bf7702864ade1b75ebab2b4fe182a7a9011b755e8608d253a30a263038bc8d57a22a92bc2
+SHA512 (acct-6.6.4.tar.gz) = 413aa446caece8fd773c92e2995bbaa034f63dd0ced521815a676c49f118e02982862b9c0ab7e60be5212c87d1e82ba6325bda212cf4857392a068d359a1e2c2