diff --git a/.travis.yml b/.travis.yml
index f2f798b8..be9b1c71 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -16,7 +16,7 @@ matrix:
         - gcc
 before_install:
 - eval "${MATRIX_EVAL}"
-- sudo apt-get install build-essential cmake libboost-all-dev libconfig++-dev libavcodec-dev libavutil-dev libavformat-dev ffmpeg libmagick++-dev libpstreams-dev libconfig++-dev libpstreams-dev libtag1-dev
+- sudo apt-get install build-essential cmake libboost-all-dev libconfig++-dev libavcodec-dev libavutil-dev libavformat-dev ffmpeg libgraphicsmagick++1-dev libpstreams-dev libconfig++-dev libpstreams-dev libtag1-dev
 - git clone https://github.com/emweb/wt.git wt
 - pushd wt;
 - git checkout 4.1.0
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 516595ee..804bf495 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,7 +7,7 @@ set(CMAKE_CXX_STANDARD_REQUIRED True)
 
 include(CTest)
 find_package(PkgConfig)
-pkg_check_modules(IMAGEMAGICKXX REQUIRED ImageMagick++)
+pkg_check_modules(GRAPHICSMAGICKXX REQUIRED GraphicsMagick++)
 
 add_subdirectory(src)
 
diff --git a/README.md b/README.md
index 25b903a4..0a800149 100644
--- a/README.md
+++ b/README.md
@@ -85,7 +85,7 @@ __Notes__:
 * a C++17 compiler is needed
 * ffmpeg version 4 minimum is required
 ```sh
-apt-get install g++ cmake libboost-system-dev libavutil-dev libavformat-dev libmagick++-dev libconfig++-dev libpstreams-dev ffmpeg libtag1-dev
+apt-get install g++ cmake libboost-system-dev libavutil-dev libavformat-dev libgraphicsmagick++1-dev libconfig++-dev libpstreams-dev ffmpeg libtag1-dev
 ```
 
 You also need _Wt4_, which is not packaged yet on _Debian_. See [installation instructions](https://www.webtoolkit.eu/wt/doc/reference/html/InstallationUnix.html).</br>
@@ -208,6 +208,6 @@ To connect to _LMS_, just open your favorite browser and go to http://localhost:
 * Wt (http://www.webtoolkit.eu/)
 * bootstrap3 (http://getbootstrap.com/)
 * ffmpeg project (https://ffmpeg.org/)
-* Magick++ (http://www.imagemagick.org/Magick++/)
+* GraphicsMagick++ (http://www.graphicsmagick.org/)
 * MetaBrainz (https://metabrainz.org/)
 * Bootstrap Notify: https://github.com/mouse0270/bootstrap-notify
diff --git a/docker/Dockerfile b/docker/Dockerfile
index 4ac83cd4..6e404a0e 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -5,7 +5,7 @@ WORKDIR	/tmp/workdir
 ARG	MAKEFLAGS="-j2"
 ARG	FFMPEG_VERSION=4.1.4
 ARG	WT_VERSION=4.2.0
-ARG	IMAGEMAGICK6_VERSION=6.9.10-71
+ARG	GRAPHICSMAGICK_VERSION=1.3.35
 ARG	PSTREAMS_VERSION=1.0.1
 ARG	LMS_VERSION=v3.6.3
 
@@ -24,6 +24,7 @@ ARG	BUILD_PACKAGES=" \
 	make \
 	libjpeg-turbo-dev \
 	openjpeg-dev \
+	jasper-dev \
 	libpng-dev \
 	tiff-dev \
 	nasm \
@@ -95,50 +96,42 @@ RUN \
 	make && \
 	make install
 
-# ImageMagick
+# GraphicsMagick++
 RUN \
-	DIR=/tmp/imagemagick && mkdir -p ${DIR} && cd ${DIR} && \
-	curl -sLO https://github.com/ImageMagick/ImageMagick6/archive/${IMAGEMAGICK6_VERSION}.tar.gz && \
-	tar -x --strip-components=1 -f ${IMAGEMAGICK6_VERSION}.tar.gz
+	DIR=/tmp/graphicsmagick && mkdir -p ${DIR} && cd ${DIR} && \
+	curl -sL ftp://ftp.graphicsmagick.org/pub/GraphicsMagick/1.3/GraphicsMagick-${GRAPHICSMAGICK_VERSION}.tar.gz -o ${GRAPHICSMAGICK_VERSION}.tar.gz && \
+	tar -x --strip-components=1 -f ${GRAPHICSMAGICK_VERSION}.tar.gz
 
 RUN \
-	DIR=/tmp/imagemagick && mkdir -p ${DIR} && cd ${DIR} && \
+	DIR=/tmp/graphicsmagick && mkdir -p ${DIR} && cd ${DIR} && \
 	./configure \
 	--prefix=${PREFIX} \
 	--enable-shared=yes \
-	--disable-static \
-	--disable-docs \
-	--with-magick-plus-plus \
-	--without-zstd \
-	--without-dps \
-	--without-autotrace \
-	--without-dps \
-	--without-fftw \
-	--without-flif \
-	--without-fpx \
-	--without-djvu \
-	--without-fontconfig \
-	--without-freetype \
-	--without-raqm \
-	--without-gslib \
-	--without-gvc \
-	--without-heic \
-	--without-jbig \
-	--with-jpeg \
-	--without-jxl \
-	--without-lcms \
-	--with-openjp2 \
-	--without-lqr \
-	--with-lzma \
-	--without-openexr \
-	--without-pango \
-	--with-png \
-	--without-raw \
-	--without-rsvg \
-	--with-tiff \
-	--without-webp \
-	--without-wmf \
-	--without-xml && \
+	--enable-static=no \
+	--with-quantum-depth=8 \
+	--with-modules=no \
+	--with-frozenpaths=no \
+	--with-magick-plus-plus=yes \
+	--with-perl=no \
+	--with-bzlib=no \
+	--with-dps=no \
+	--with-fpx=no \
+	--with-jbig=no \
+	--with-webp=no \
+	--with-jp2=yes \
+	--with-jpeg=yes \
+	--with-lcms2=no \
+	--with-lzma=no \
+	--with-png=yes \
+	--with-tiff=yes \
+	--with-trio=no \
+	--with-ttf=no \
+	--with-tcmalloc=no \
+	--with-wmf=no \
+	--with-xml=no \
+	--with-zlib=yes \
+	--with-zstd=no \
+	--with-x=no && \
 	make && \
 	make install && \
 	make distclean
@@ -178,7 +171,8 @@ RUN \
 	done && \
 	cp -r ${PREFIX}/lib /tmp/fakeroot/lib && \
 	cp -r ${PREFIX}/share /tmp/fakeroot/share && \
-        LD_LIBRARY_PATH=/tmp/fakeroot/lib /tmp/fakeroot/bin/ffmpeg -buildconf
+	rm -rf /tmp/fakeroot/share/doc && \
+	rm -rf /tmp/fakeroot/share/man
 
 ## Release Stage
 FROM		alpine:3.10 AS release
@@ -188,6 +182,7 @@ ARG	RUNTIME_PACKAGES=" \
 	openssl \
 	libjpeg-turbo \
 	openjpeg \
+	jasper-libs \
 	libpng \
 	tiff \
 	libogg \
diff --git a/src/libs/cover/CMakeLists.txt b/src/libs/cover/CMakeLists.txt
index 62eb5d43..cffb40b5 100644
--- a/src/libs/cover/CMakeLists.txt
+++ b/src/libs/cover/CMakeLists.txt
@@ -10,17 +10,17 @@ target_include_directories(lmscover INTERFACE
 
 target_include_directories(lmscover PRIVATE
 	include
-	${IMAGEMAGICKXX_INCLUDE_DIRS}
+	${GRAPHICSMAGICKXX_INCLUDE_DIRS}
 	)
 
 target_compile_options(lmscover PRIVATE
-	${IMAGEMAGICKXX_CFLAGS_OTHER}
+	${GRAPHICSMAGICKXX_CFLAGS_OTHER}
 	)
 
 target_link_libraries(lmscover PRIVATE
 	lmsav
 	lmsdatabase
-	${IMAGEMAGICKXX_LIBRARIES}
+	${GRAPHICSMAGICKXX_LIBRARIES}
 	)
 
 install(TARGETS lmscover DESTINATION lib)
diff --git a/src/libs/cover/impl/CoverArtGrabber.cpp b/src/libs/cover/impl/CoverArtGrabber.cpp
index 110b80d1..38781cbc 100644
--- a/src/libs/cover/impl/CoverArtGrabber.cpp
+++ b/src/libs/cover/impl/CoverArtGrabber.cpp
@@ -49,15 +49,13 @@ Grabber::Grabber(const std::filesystem::path& execPath)
 	init(execPath);
 }
 
-Grabber::~Grabber()
-{
-	deinit();
-}
-
 void
 Grabber::setDefaultCover(const std::filesystem::path& p)
 {
-	if (!_defaultCover.load(p))
+	std::unique_lock lock {_mutex};
+
+	_defaultCover = std::make_unique<Image>();
+	if (!_defaultCover->load(p))
 		throw LmsException("Cannot read default cover file '" + p.string() + "'");
 }
 
@@ -65,12 +63,12 @@ Image
 Grabber::getDefaultCover(std::size_t size)
 {
 	LMS_LOG(COVER, DEBUG) << "Getting a default cover using size = " << size;
-	std::unique_lock<std::mutex> lock(_mutex);
+	std::unique_lock lock {_mutex};
 
 	auto it = _defaultCovers.find(size);
 	if (it == _defaultCovers.end())
 	{
-		Image cover = _defaultCover;
+		Image cover = *_defaultCover;
 
 		LMS_LOG(COVER, DEBUG) << "default cover size = " << cover.getSize().width << " x " << cover.getSize().height;
 
diff --git a/src/libs/cover/impl/CoverArtGrabber.hpp b/src/libs/cover/impl/CoverArtGrabber.hpp
index bc921355..df932315 100644
--- a/src/libs/cover/impl/CoverArtGrabber.hpp
+++ b/src/libs/cover/impl/CoverArtGrabber.hpp
@@ -41,7 +41,6 @@ namespace CoverArt
 	{
 		public:
 			Grabber(const std::filesystem::path& execPath);
-			~Grabber();
 
 			Grabber(const Grabber&) = delete;
 			Grabber& operator=(const Grabber&) = delete;
@@ -63,9 +62,8 @@ namespace CoverArt
 			std::optional<Image>			getFromDirectory(const std::filesystem::path& path) const;
 			Image					getDefaultCover(std::size_t size);
 
-			Image _defaultCover;
-
 			std::mutex _mutex;
+			std::unique_ptr<Image> _defaultCover;
 			std::map<std::size_t /* size */, Image> _defaultCovers;
 
 			static inline const std::vector<std::filesystem::path> _fileExtensions {".jpg", ".jpeg", ".png", ".bmp"}; // TODO parametrize
diff --git a/src/libs/cover/impl/Image.cpp b/src/libs/cover/impl/Image.cpp
index a39c0061..f05fcc73 100644
--- a/src/libs/cover/impl/Image.cpp
+++ b/src/libs/cover/impl/Image.cpp
@@ -29,12 +29,6 @@ init(const std::filesystem::path& path)
 	Magick::InitializeMagick(path.string().c_str());
 }
 
-void
-deinit()
-{
-	MagickCore::MagickCoreTerminus();
-}
-
 static
 std::string
 formatToMagick(Format format)
diff --git a/src/libs/cover/impl/Image.hpp b/src/libs/cover/impl/Image.hpp
index 6932825f..7abcb37c 100644
--- a/src/libs/cover/impl/Image.hpp
+++ b/src/libs/cover/impl/Image.hpp
@@ -30,7 +30,6 @@ namespace CoverArt
 {
 
 	void init(const std::filesystem::path& path);
-	void deinit();
 
 	class Image
 	{