diff --git a/Documentation/BuildInstructions.md b/Documentation/BuildInstructions.md
index d61595124d7..801ac939b14 100644
--- a/Documentation/BuildInstructions.md
+++ b/Documentation/BuildInstructions.md
@@ -30,7 +30,7 @@ QEMU version 5 is available in Ubuntu 20.10, but it is recommended to build Qemu
 Note that you might need additional dev packages:
 
 ```console
-sudo apt install libgtk-3-dev libpixman-1-dev libspice-server-dev
+sudo apt install libgtk-3-dev libpixman-1-dev libsdl2-dev libspice-server-dev
 ```
 
 ### Windows
diff --git a/Toolchain/Dockerfile b/Toolchain/Dockerfile
index 85aa705b405..6c72cd42ca0 100644
--- a/Toolchain/Dockerfile
+++ b/Toolchain/Dockerfile
@@ -10,14 +10,18 @@ RUN apt-get update -y \
         curl \
         g++-10 \
         gcc-10 \
+        e2fsprogs \
         genext2fs \
         gettext \
         git \
         imagemagick \
-        libmpfr-dev \
-        libmpc-dev \
         libgmp-dev \
-        e2fsprogs \
+        libgtk-3-dev \
+        libmpc-dev \
+        libmpfr-dev \
+        libpixman-1-dev \
+        libsdl2-dev \
+        libspice-server-dev \
         ninja-build \
         qemu-utils \
         rsync \