diff --git a/src/bin/dhcp4/location.hh b/src/bin/dhcp4/location.hh
index e4b0ecdd59..cc89256d69 100644
--- a/src/bin/dhcp4/location.hh
+++ b/src/bin/dhcp4/location.hh
@@ -1,4 +1,4 @@
-// Generated 201811261532
+// Generated 201811202257
 // A Bison parser, made by GNU Bison 3.2.1.
 
 // Locations for Bison parsers in C++
diff --git a/src/bin/dhcp4/position.hh b/src/bin/dhcp4/position.hh
index efed908c0b..c9749a5d1a 100644
--- a/src/bin/dhcp4/position.hh
+++ b/src/bin/dhcp4/position.hh
@@ -1,4 +1,4 @@
-// Generated 201811261532
+// Generated 201811202257
 // A Bison parser, made by GNU Bison 3.2.1.
 
 // Starting with Bison 3.2, this file is useless: the structure it
diff --git a/src/bin/dhcp4/stack.hh b/src/bin/dhcp4/stack.hh
index b507876f44..63282a8b87 100644
--- a/src/bin/dhcp4/stack.hh
+++ b/src/bin/dhcp4/stack.hh
@@ -1,4 +1,4 @@
-// Generated 201811261532
+// Generated 201811202257
 // A Bison parser, made by GNU Bison 3.2.1.
 
 // Starting with Bison 3.2, this file is useless: the structure it
diff --git a/src/bin/dhcp6/location.hh b/src/bin/dhcp6/location.hh
index d49d7aa81f..d87a94ca6b 100644
--- a/src/bin/dhcp6/location.hh
+++ b/src/bin/dhcp6/location.hh
@@ -1,4 +1,4 @@
-// Generated 201811261532
+// Generated 201811202258
 // A Bison parser, made by GNU Bison 3.2.1.
 
 // Locations for Bison parsers in C++
diff --git a/src/bin/dhcp6/position.hh b/src/bin/dhcp6/position.hh
index efed908c0b..a5b8de040e 100644
--- a/src/bin/dhcp6/position.hh
+++ b/src/bin/dhcp6/position.hh
@@ -1,4 +1,4 @@
-// Generated 201811261532
+// Generated 201811202258
 // A Bison parser, made by GNU Bison 3.2.1.
 
 // Starting with Bison 3.2, this file is useless: the structure it
diff --git a/src/bin/dhcp6/stack.hh b/src/bin/dhcp6/stack.hh
index b507876f44..4a5cf50be7 100644
--- a/src/bin/dhcp6/stack.hh
+++ b/src/bin/dhcp6/stack.hh
@@ -1,4 +1,4 @@
-// Generated 201811261532
+// Generated 201811202258
 // A Bison parser, made by GNU Bison 3.2.1.
 
 // Starting with Bison 3.2, this file is useless: the structure it