diff --git a/c++utilities/doc/PKGBUILD b/c++utilities/doc/PKGBUILD
index 30f29b67..7e41cb7d 100644
--- a/c++utilities/doc/PKGBUILD
+++ b/c++utilities/doc/PKGBUILD
@@ -11,7 +11,7 @@ pkgrel=1
 arch=('any')
 pkgdesc='Common C++ classes and routines such as argument parser, IO and conversion utilities (API documentation)'
 license=('GPL')
-makedepends=('cmake' 'ninja' 'doxygen' 'dia' 'graphviz')
+makedepends=('cmake' 'ninja' 'doxygen' 'graphviz')
 url="https://github.com/Martchus/${_reponame}"
 source=("${_name}-${pkgver}.tar.gz::https://github.com/Martchus/${_reponame}/archive/v${pkgver}.tar.gz")
 sha256sums=('845362bd91d3e1ecb6bf3fc18492dda1d48458f35380dd79351ea7bb36804be0')
diff --git a/passwordfile/doc/PKGBUILD b/passwordfile/doc/PKGBUILD
index 555fe2c6..c404dba9 100644
--- a/passwordfile/doc/PKGBUILD
+++ b/passwordfile/doc/PKGBUILD
@@ -11,7 +11,7 @@ pkgrel=1
 arch=('any')
 pkgdesc='C++ library to read/write passwords from/to encrypted files using AES-256-CBC via OpenSSL (API documentation)'
 license=('GPL')
-makedepends=('cmake' 'ninja' 'doxygen' 'dia' 'graphviz' 'c++utilities')
+makedepends=('cmake' 'ninja' 'doxygen' 'graphviz' 'c++utilities')
 url="https://github.com/Martchus/${_reponame}"
 source=("${_name}-${pkgver}.tar.gz::https://github.com/Martchus/${_reponame}/archive/v${pkgver}.tar.gz")
 sha256sums=('03a0ced7ecfce18ec35104dedb73eec457875ff72859290c11616b36b2da0bbb')
diff --git a/qtforkawesome/doc/PKGBUILD b/qtforkawesome/doc/PKGBUILD
index 4478a89e..f4a6ca5f 100644
--- a/qtforkawesome/doc/PKGBUILD
+++ b/qtforkawesome/doc/PKGBUILD
@@ -13,7 +13,7 @@ pkgrel=1
 arch=('any')
 pkgdesc='Library that bundles ForkAwesome for use within Qt applications (API documentation)'
 license=('GPL')
-makedepends=('cmake' 'ninja' 'doxygen' 'dia' 'graphviz' 'qtutilities' 'mesa' 'qt5-declarative')
+makedepends=('cmake' 'ninja' 'doxygen' 'graphviz' 'qtutilities' 'mesa' 'qt5-declarative')
 url="https://github.com/Martchus/${_reponame}"
 source=("${_name}-${pkgver}.tar.gz::https://github.com/Martchus/${_reponame}/archive/v${pkgver}.tar.gz"
         "${_reponame_forkawesome}::https://github.com/ForkAwesome/Fork-Awesome/archive/refs/tags/${_pkgver_forkawesome}.tar.gz")
diff --git a/qtutilities/doc/PKGBUILD b/qtutilities/doc/PKGBUILD
index 89111b7e..e77f0ec4 100644
--- a/qtutilities/doc/PKGBUILD
+++ b/qtutilities/doc/PKGBUILD
@@ -11,7 +11,7 @@ pkgrel=1
 arch=('any')
 pkgdesc='Common Qt related C++ classes and routines used by my applications such as dialogs, widgets and models (API documentation)'
 license=('GPL')
-makedepends=('cmake' 'ninja' 'doxygen' 'dia' 'graphviz' 'c++utilities' 'qt5-tools' 'mesa')
+makedepends=('cmake' 'ninja' 'doxygen' 'graphviz' 'c++utilities' 'qt5-tools' 'mesa')
 url="https://github.com/Martchus/${_reponame}"
 source=("${_name}-${pkgver}.tar.gz::https://github.com/Martchus/${_reponame}/archive/v${pkgver}.tar.gz")
 sha256sums=('76ac459271f596bfda46f4293adfb49fa3088c011d06737c9ab7f8bb32cde9d2')
diff --git a/reflective-rapidjson/doc/PKGBUILD b/reflective-rapidjson/doc/PKGBUILD
index 3baf5293..3e8355a1 100644
--- a/reflective-rapidjson/doc/PKGBUILD
+++ b/reflective-rapidjson/doc/PKGBUILD
@@ -11,7 +11,7 @@ pkgrel=1
 arch=('any')
 pkgdesc='Code generator for serializing/deserializing C++ objects to/from JSON using Clang and RapidJSON (API documentation)'
 license=('GPL')
-makedepends=('c++utilities' 'cmake' 'ninja' 'doxygen' 'dia' 'graphviz' 'clang' 'clang-tools-extra'  'llvm' 'rapidjson')
+makedepends=('c++utilities' 'cmake' 'ninja' 'doxygen' 'graphviz' 'clang' 'clang-tools-extra'  'llvm' 'rapidjson')
 url="https://github.com/Martchus/${_reponame}"
 source=("${_name}-${pkgver}.tar.gz::https://github.com/Martchus/${_reponame}/archive/v${pkgver}.tar.gz")
 sha256sums=('1e253ca0c63c6432ede1b1d7ad6c828b93eeb47eb1843d7bdc09445be7c1bba6')
diff --git a/tagparser/doc/PKGBUILD b/tagparser/doc/PKGBUILD
index 5351fbff..b472951d 100644
--- a/tagparser/doc/PKGBUILD
+++ b/tagparser/doc/PKGBUILD
@@ -11,7 +11,7 @@ pkgrel=1
 arch=('any')
 pkgdesc='C++ library for reading and writing MP4/M4A/AAC (iTunes), ID3, Vorbis, Opus, FLAC and Matroska tags (API documentation)'
 license=('GPL')
-makedepends=('cmake' 'ninja' 'iso-codes' 'doxygen' 'dia' 'graphviz' 'c++utilities')
+makedepends=('cmake' 'ninja' 'iso-codes' 'doxygen' 'graphviz' 'c++utilities')
 url="https://github.com/Martchus/${_reponame}"
 source=("${_name}-${pkgver}.tar.gz::https://github.com/Martchus/${_reponame}/archive/v${pkgver}.tar.gz")
 sha256sums=('361401093cd8855ba11403f10658e843417d00894c1af82b720cd106b9d814d2')