diff --git a/source/docs/en/1.3.0/developer/build-windows.markdown b/source/docs/en/1.3.0/developer/build-windows.markdown
index 422d9450..8d903eb7 100644
--- a/source/docs/en/1.3.0/developer/build-windows.markdown
+++ b/source/docs/en/1.3.0/developer/build-windows.markdown
@@ -108,7 +108,7 @@ Additional MinGW-w64 toolchain dependencies:
 Install dependencies.
 
     sudo apt-get update
-    sudo apt-get install automake autoconf autopoint build-essential cmake gcc git intltool libtool libtool-bin m4 make nasm patch pkg-config python tar zlib1g-dev
+    sudo apt-get install automake autoconf autopoint build-essential cmake gcc git intltool libtool libtool-bin m4 make nasm ninja-build patch pkg-config python tar zlib1g-dev
 
 If you are running Ubuntu 18.10 or later, install the additional dependencies.
 
diff --git a/source/docs/en/latest/developer/build-windows.markdown b/source/docs/en/latest/developer/build-windows.markdown
index 4ac154cd..7f8084e4 100644
--- a/source/docs/en/latest/developer/build-windows.markdown
+++ b/source/docs/en/latest/developer/build-windows.markdown
@@ -108,7 +108,7 @@ Additional MinGW-w64 toolchain dependencies:
 Install dependencies.
 
     sudo apt-get update
-    sudo apt-get install automake autoconf autopoint build-essential cmake gcc git intltool libtool libtool-bin m4 make nasm patch pkg-config python tar zlib1g-dev
+    sudo apt-get install automake autoconf autopoint build-essential cmake gcc git intltool libtool libtool-bin m4 make nasm ninja-build patch pkg-config python tar zlib1g-dev
 
 If you are running Ubuntu 18.10 or later, install the additional dependencies.