diff --git a/Telegram/build/docker/centos_env/Dockerfile b/Telegram/build/docker/centos_env/Dockerfile
index 90aa90f32..157f0e575 100644
--- a/Telegram/build/docker/centos_env/Dockerfile
+++ b/Telegram/build/docker/centos_env/Dockerfile
@@ -22,7 +22,7 @@ ENV PATH ${PATH}:${QT5_PREFIX}/bin:${QT6_PREFIX}/bin
 
 RUN yum -y install https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
 RUN yum -y install https://packages.endpoint.com/rhel/7/os/x86_64/endpoint-repo-1.7-1.x86_64.rpm
-RUN yum -y install centos-release-scl
+RUN yum -y install centos-release-scl && yum clean all
 
 RUN yum -y install git meson ninja-build autoconf automake libtool \
 	fontconfig-devel freetype-devel libX11-devel at-spi2-core-devel alsa-lib-devel \
@@ -30,7 +30,7 @@ RUN yum -y install git meson ninja-build autoconf automake libtool \
 	webkitgtk4-devel pkgconfig bison yasm file which xorg-x11-util-macros \
 	devtoolset-9-make devtoolset-9-gcc devtoolset-9-gcc-c++ \
 	devtoolset-9-binutils llvm-toolset-7.0 llvm-toolset-7.0-clang-devel \
-	llvm-toolset-7.0-llvm-devel
+	llvm-toolset-7.0-llvm-devel perl-XML-Parser && yum clean all
 
 SHELL [ "bash", "-c", ". /opt/rh/devtoolset-9/enable; exec bash -c \"$@\"", "-s"]
 
@@ -652,7 +652,6 @@ RUN rm -rf libsigcplusplus
 FROM patches AS glibmm
 COPY --from=mm-common ${LibrariesPath}/mm-common-cache /
 COPY --from=libsigcplusplus ${LibrariesPath}/libsigcplusplus-cache /
-RUN yum -y install perl-XML-Parser
 
 # equals to glib version of Ubuntu 14.04
 RUN git clone -b 2.40.0 --depth=1 $GIT/GNOME/glibmm.git