diff --git a/src/parser/location.hh b/src/parser/location.hh
index eafd7be7..24328f42 100644
--- a/src/parser/location.hh
+++ b/src/parser/location.hh
@@ -1,4 +1,4 @@
-// A Bison parser, made by GNU Bison 3.5.3.
+// A Bison parser, made by GNU Bison 3.5.4.
 
 // Locations for Bison parsers in C++
 
diff --git a/src/parser/position.hh b/src/parser/position.hh
index faf89527..37441520 100644
--- a/src/parser/position.hh
+++ b/src/parser/position.hh
@@ -1,4 +1,4 @@
-// A Bison parser, made by GNU Bison 3.5.3.
+// A Bison parser, made by GNU Bison 3.5.4.
 
 // Starting with Bison 3.2, this file is useless: the structure it
 // used to define is now defined in "location.hh".
diff --git a/src/parser/seclang-parser.cc b/src/parser/seclang-parser.cc
index 066200dd..210cecc1 100644
--- a/src/parser/seclang-parser.cc
+++ b/src/parser/seclang-parser.cc
@@ -1,4 +1,4 @@
-// A Bison parser, made by GNU Bison 3.5.3.
+// A Bison parser, made by GNU Bison 3.5.4.
 
 // Skeleton implementation for Bison LALR(1) parsers in C++
 
diff --git a/src/parser/seclang-parser.hh b/src/parser/seclang-parser.hh
index 1a42b1ed..d283aea0 100644
--- a/src/parser/seclang-parser.hh
+++ b/src/parser/seclang-parser.hh
@@ -1,4 +1,4 @@
-// A Bison parser, made by GNU Bison 3.5.3.
+// A Bison parser, made by GNU Bison 3.5.4.
 
 // Skeleton interface for Bison LALR(1) parsers in C++
 
diff --git a/src/parser/stack.hh b/src/parser/stack.hh
index e83ba35f..d2d9eb91 100644
--- a/src/parser/stack.hh
+++ b/src/parser/stack.hh
@@ -1,4 +1,4 @@
-// A Bison parser, made by GNU Bison 3.5.3.
+// A Bison parser, made by GNU Bison 3.5.4.
 
 // Starting with Bison 3.2, this file is useless: the structure it
 // used to define is now defined with the parser itself.