diff --git a/dev-utils/_unix/bison/bison.py b/dev-utils/_unix/bison/bison.py
index 9cd05360..4565b248 100644
--- a/dev-utils/_unix/bison/bison.py
+++ b/dev-utils/_unix/bison/bison.py
@@ -1,25 +1,26 @@
 # -*- coding: utf-8 -*-
 import info
 from Package.AutoToolsPackageBase import *
 
 
 class subinfo(info.infoclass):
     def setDependencies(self):
         self.buildDependencies["dev-utils/msys"] = "default"
         self.runtimeDependencies["virtual/base"] = "default"
+        self.buildDependencies["dev-utils/help2man"] = "default"
 
     def setTargets(self):
         self.description = "Bison is a general-purpose parser generator that converts an annotated context-free grammar into a deterministic LR or generalized LR (GLR) parser employing LALR(1) parser tables"
         self.svnTargets['master'] = 'git://git.savannah.gnu.org/bison.git'
         for ver in ["3.0.4"]:
             self.targets[ver] = f"http://ftp.gnu.org/gnu/bison/bison-{ver}.tar.xz"
             self.targetInstSrc[ver] = f"bison-{ver}"
         self.defaultTarget = '3.0.4'
         self.patchToApply["3.0.4"] = [("vasnprintf-macos.diff", 1)]
 
 
 class Package(AutoToolsPackageBase):
     def __init__(self, **args):
         AutoToolsPackageBase.__init__(self)
         self.subinfo.options.configure.args += " --disable-static --enable-shared"