diff --git a/desktop_version/Dockerfile b/desktop_version/Dockerfile
index fe127ac5..7a98295e 100644
--- a/desktop_version/Dockerfile
+++ b/desktop_version/Dockerfile
@@ -2,9 +2,9 @@ FROM centos:7
 
 # run first to improve caching (other things update more often than SDL2)
 WORKDIR /tmp
-RUN curl -O https://www.libsdl.org/release/SDL2-2.0.16.tar.gz
-RUN tar -xf SDL2-2.0.16.tar.gz
-RUN mkdir SDL2-2.0.16/build
+RUN curl -O https://www.libsdl.org/release/SDL2-2.0.20.tar.gz
+RUN tar -xf SDL2-2.0.20.tar.gz
+RUN mkdir SDL2-2.0.20/build
 RUN curl -O https://www.libsdl.org/projects/SDL_mixer/release/SDL2_mixer-2.0.4.tar.gz
 RUN tar -xf SDL2_mixer-2.0.4.tar.gz
 RUN mkdir SDL2_mixer-2.0.4/build
@@ -25,7 +25,7 @@ RUN yum-builddep -y SDL2
 
 RUN yum clean all
 
-WORKDIR /tmp/SDL2-2.0.16/build
+WORKDIR /tmp/SDL2-2.0.20/build
 RUN ../configure
 RUN make -j $(nproc)
 RUN make install
@@ -36,6 +36,6 @@ RUN make -j $(nproc)
 RUN make install
 
 WORKDIR /tmp
-RUN rm -rf SDL2-2.0.16.tar.gz SDL2-2.0.16/ SDL2_mixer-2.0.4.tar.gz SDL2_mixer-2.0.4/
+RUN rm -rf SDL2-2.0.20.tar.gz SDL2-2.0.20/ SDL2_mixer-2.0.4.tar.gz SDL2_mixer-2.0.4/
 
 WORKDIR /