diff --git a/pkgs/development/libraries/libagar/default.nix b/pkgs/development/libraries/libagar/default.nix
index 1c9e8eca0d5..ee984a53b4c 100644
--- a/pkgs/development/libraries/libagar/default.nix
+++ b/pkgs/development/libraries/libagar/default.nix
@@ -20,15 +20,16 @@ stdenv.mkDerivation rec {
     "--with-gettext=${gettext}"
     "--with-jpeg=${libjpeg.dev}"
     "--with-gl=${mesa}"
-    "--with-mysql=yes"
+    "--with-mysql=${mysql.connector-c}"
     "--with-manpages=yes"
   ];
 
   outputs = [ "out" "devdoc" ];
 
   nativeBuildInputs = [ pkgconfig libtool gettext ];
+
   buildInputs = [
-    bsdbuild perl xlibsWrapper libXinerama SDL mesa  mysql.client mandoc
+    bsdbuild perl xlibsWrapper libXinerama SDL mesa mysql.connector-c mandoc
     freetype.dev libpng libjpeg.dev fontconfig portaudio libsndfile
   ];
 
diff --git a/pkgs/development/libraries/tntdb/default.nix b/pkgs/development/libraries/tntdb/default.nix
index d11a5c344c9..75a494cfbde 100644
--- a/pkgs/development/libraries/tntdb/default.nix
+++ b/pkgs/development/libraries/tntdb/default.nix
@@ -8,7 +8,7 @@ stdenv.mkDerivation rec {
     sha256 = "0js79dbvkic30bzw1pf26m64vs2ssw2sbj55w1dc0sy69dlv4fh9";
   };
 
-  buildInputs = [ cxxtools postgresql mysql sqlite zlib openssl ];
+  buildInputs = [ cxxtools postgresql mysql.connector-c sqlite zlib openssl ];
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/tools/networking/kea/default.nix b/pkgs/tools/networking/kea/default.nix
index 68fb72ff7d9..f33fe7a7105 100644
--- a/pkgs/tools/networking/kea/default.nix
+++ b/pkgs/tools/networking/kea/default.nix
@@ -21,12 +21,12 @@ stdenv.mkDerivation rec {
   configureFlags = [
     "--localstatedir=/var"
     "--with-dhcp-pgsql=${postgresql}/bin/pg_config"
-    "--with-dhcp-mysql=${mysql.client.dev}/bin/mysql_config"
+    "--with-dhcp-mysql=${mysql.connector-c}/bin/mysql_config"
   ];
 
   nativeBuildInputs = [ autoreconfHook pkgconfig ];
   buildInputs = [
-    openssl log4cplus boost python3 mysql.client
+    openssl log4cplus boost python3 mysql.connector-c
     botan2 gmp bzip2
   ];