diff --git a/.ci/script.sh b/.ci/script.sh
index f5966349..377f23e1 100755
--- a/.ci/script.sh
+++ b/.ci/script.sh
@@ -11,7 +11,6 @@ if [ $TRAVIS_OS_NAME == osx ]; then
 fi
 
 # Build & install dependencies
-mkdir -p .deps/usr/{lib,include}/
 cmake -Hdeps -B.deps \
     -DUSE_BUNDLED_BOOST=${USE_BUNDLED_BOOST} \
     -DUSE_BUNDLED_SPDLOG=${USE_BUNDLED_SPDLOG}
diff --git a/CMakeLists.txt b/CMakeLists.txt
index ef20be39..e9bf05bc 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -29,12 +29,6 @@ set(IDENTIFIER "com.github.mujx.nheko")
 
 add_project_meta(META_FILES_TO_INCLUDE)
 
-set(DEPS_PREFIX "${CMAKE_CURRENT_SOURCE_DIR}/.deps/usr"
-    CACHE PATH "Path prefix for finding dependencies")
-list(INSERT CMAKE_PREFIX_PATH 0 ${DEPS_PREFIX})
-
-include_directories(SYSTEM ${DEPS_PREFIX}/include)
-
 if(APPLE)
     set(OPENSSL_ROOT_DIR /usr/local/opt/openssl)
 endif()
@@ -208,8 +202,10 @@ set(EXTERNAL_PROJECT_DEPS "")
 
 find_package(ZLIB REQUIRED)
 find_package(OpenSSL REQUIRED)
-find_package(MatrixStructs REQUIRED)
-find_package(MatrixClient REQUIRED)
+find_package(MatrixStructs 0.1.0 REQUIRED)
+find_package(MatrixClient 0.1.0 REQUIRED)
+find_package(Olm 2 REQUIRED)
+find_package(spdlog 0.16.0 CONFIG REQUIRED)
 
 #
 # tweeny
@@ -315,7 +311,8 @@ set(COMMON_LIBS
     MatrixClient::MatrixClient
     Qt5::Widgets
     Qt5::Svg
-    Qt5::Concurrent)
+    Qt5::Concurrent
+    Qt5::Multimedia)
 
 if(APPVEYOR_BUILD)
     set(NHEKO_LIBS ${COMMON_LIBS} lmdb)
@@ -345,13 +342,13 @@ endif()
 
 if(APPLE)
     add_executable (nheko ${OS_BUNDLE} ${NHEKO_DEPS})
-    target_link_libraries (nheko ${NHEKO_LIBS} Qt5::MacExtras Qt5::Multimedia)
+    target_link_libraries (nheko ${NHEKO_LIBS} Qt5::MacExtras)
 elseif(WIN32)
     add_executable (nheko ${OS_BUNDLE} ${ICON_FILE} ${NHEKO_DEPS})
-    target_link_libraries (nheko ${NTDLIB} ${NHEKO_LIBS} Qt5::WinMain Qt5::Multimedia)
+    target_link_libraries (nheko ${NTDLIB} ${NHEKO_LIBS} Qt5::WinMain)
 else()
     add_executable (nheko ${OS_BUNDLE} ${NHEKO_DEPS})
-    target_link_libraries (nheko ${NHEKO_LIBS} Qt5::Multimedia)
+    target_link_libraries (nheko ${NHEKO_LIBS})
 endif()
 
 if(EXTERNAL_PROJECT_DEPS)
diff --git a/Makefile b/Makefile
index 833d81a0..584aafa2 100644
--- a/Makefile
+++ b/Makefile
@@ -2,25 +2,30 @@ DEPS_BUILD_DIR=.deps
 DEPS_SOURCE_DIR=deps
 
 debug:
-	@cmake -H. -GNinja -Bbuild -DCMAKE_BUILD_TYPE=Debug -DCMAKE_EXPORT_COMPILE_COMMANDS=1
+	@cmake -H. -GNinja \
+		-Bbuild \
+		-DCMAKE_BUILD_TYPE=Debug \
+		-DCMAKE_EXPORT_COMPILE_COMMANDS=1 \
+		-DCMAKE_INSTALL_PREFIX=${DEPS_BUILD_DIR}/usr
 	@cmake --build build
 
-third_party:
-	@mkdir -p ${DEPS_BUILD_DIR}/usr/{lib,include}/
+third-party:
 	@cmake -GNinja -H${DEPS_SOURCE_DIR} -B${DEPS_BUILD_DIR} \
 		-DCMAKE_BUILD_TYPE=Release \
 		-DUSE_BUNDLED_BOOST=OFF
 	@cmake --build ${DEPS_BUILD_DIR}
 
 ci:
-	mkdir -p ${DEPS_BUILD_DIR}/usr/{lib,include}/
 	cmake -H${DEPS_SOURCE_DIR} -B${DEPS_BUILD_DIR} -DCMAKE_BUILD_TYPE=Release
 	cmake --build ${DEPS_BUILD_DIR}
 	cmake -H. -Bbuild -DCMAKE_BUILD_TYPE=RelWithDebInfo
 	cmake --build build
 
 release:
-	@cmake -H. -Bbuild -DCMAKE_BUILD_TYPE=RelWithDebInfo
+	@cmake -H. -GNinja \
+		-Bbuild \
+		-DCMAKE_BUILD_TYPE=Release \
+		-DCMAKE_INSTALL_PREFIX=${DEPS_BUILD_DIR}/usr
 	@cmake --build build
 
 linux-install:
diff --git a/appveyor.yml b/appveyor.yml
index c9f3023e..dfd637ed 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -15,7 +15,6 @@ install:
     - set QT_DIR=C:\Qt\5.10.1\msvc2017_64
     - set PATH=%PATH%;%QT_DIR%\bin;C:\MinGW\bin
     - set PATH=%PATH%;C:\mingw-w64\x86_64-7.2.0-posix-seh-rt_v5-rev1\mingw64\bin
-    - mingw32-make.exe --version
     - call "C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Auxiliary\Build\vcvars64.bat"
     - vcpkg install
             boost-asio:%PLATFORM%-windows
@@ -28,7 +27,6 @@ install:
             libsodium:%PLATFORM%-windows
             lmdb:%PLATFORM%-windows
             openssl:%PLATFORM%-windows
-            spdlog:%PLATFORM%-windows
             zlib:%PLATFORM%-windows
 
 build_script:
@@ -53,16 +51,12 @@ build_script:
     # Build & install the dependencies
     - cmake -G "Visual Studio 15 2017 Win64" -Hdeps -B.deps
         -DCMAKE_TOOLCHAIN_FILE=C:/Tools/vcpkg/scripts/buildsystems/vcpkg.cmake
-        -DCMAKE_BUILD_TYPE=Release
         -DUSE_BUNDLED_BOOST=OFF
-        -DUSE_BUNDLED_SPDLOG=OFF
-        -DUSE_BUNDLED_GTEST=OFF
     - cmake --build .deps --config Release
 
     # Build nheko
     - cmake -G "Visual Studio 15 2017 Win64" -H. -Bbuild
       -DCMAKE_TOOLCHAIN_FILE=C:/Tools/vcpkg/scripts/buildsystems/vcpkg.cmake
-      -DCMAKE_BUILD_TYPE=Release
     - cmake --build build --config Release
 
 after_build:
diff --git a/deps/CMakeLists.txt b/deps/CMakeLists.txt
index 7ea44bbd..34bcea31 100644
--- a/deps/CMakeLists.txt
+++ b/deps/CMakeLists.txt
@@ -40,7 +40,7 @@ set(MATRIX_STRUCTS_URL https://github.com/mujx/matrix-structs)
 set(MATRIX_STRUCTS_TAG eeb7373729a1618e2b3838407863342b88b8a0de)
 
 set(MTXCLIENT_URL https://github.com/mujx/mtxclient)
-set(MTXCLIENT_TAG c566fa0a254dce3282435723eb58590880be2b53)
+set(MTXCLIENT_TAG e45b1c85fce52f8ed516fd98a9cbb6a110a20d09)
 
 set(OLM_URL https://git.matrix.org/git/olm.git)
 set(OLM_TAG 4065c8e11a33ba41133a086ed3de4da94dcb6bae)
diff --git a/deps/cmake/Olm.cmake b/deps/cmake/Olm.cmake
index eb4f53e3..a5b8be76 100644
--- a/deps/cmake/Olm.cmake
+++ b/deps/cmake/Olm.cmake
@@ -1,3 +1,9 @@
+set(WINDOWS_FLAGS "")
+
+if(MSVC)
+    set(WINDOWS_FLAGS "-DCMAKE_GENERATOR_PLATFORM=x64")
+endif()
+
 ExternalProject_Add(
   Olm
 
@@ -16,11 +22,13 @@ ExternalProject_Add(
       -DCMAKE_INSTALL_PREFIX=${DEPS_INSTALL_DIR}
       -DCMAKE_BUILD_TYPE=Release
       ${DEPS_BUILD_DIR}/olm
+      ${WINDOWS_FLAGS}
   BUILD_COMMAND ${CMAKE_COMMAND}
     --build ${DEPS_BUILD_DIR}/olm
     --config Release
   INSTALL_COMMAND ${CMAKE_COMMAND}
     --build ${DEPS_BUILD_DIR}/olm
+    --config Release
     --target install)
 
 list(APPEND THIRD_PARTY_DEPS Olm)
diff --git a/deps/cmake/OlmConfig.cmake.in b/deps/cmake/OlmConfig.cmake.in
index a7541f7a..b670fe85 100644
--- a/deps/cmake/OlmConfig.cmake.in
+++ b/deps/cmake/OlmConfig.cmake.in
@@ -4,8 +4,8 @@ include(CMakeFindDependencyMacro)
 list(APPEND CMAKE_MODULE_PATH ${Olm_CMAKE_DIR})
 list(REMOVE_AT CMAKE_MODULE_PATH -1)
 
-if(NOT TARGET Olm::olm)
+if(NOT TARGET Olm::Olm)
   include("${Olm_CMAKE_DIR}/OlmTargets.cmake")
 endif()
 
-set(Olm_LIBRARIES Olm::olm)
+set(Olm_LIBRARIES Olm::Olm)
diff --git a/deps/cmake/SpdLog.cmake b/deps/cmake/SpdLog.cmake
index 1335725e..5a5f318c 100644
--- a/deps/cmake/SpdLog.cmake
+++ b/deps/cmake/SpdLog.cmake
@@ -1,3 +1,9 @@
+set(WINDOWS_FLAGS "")
+
+if(MSVC)
+    set(WINDOWS_FLAGS "-DCMAKE_GENERATOR_PLATFORM=x64")
+endif()
+
 ExternalProject_Add(
   SpdLog
 
@@ -10,8 +16,7 @@ ExternalProject_Add(
         -DCMAKE_INSTALL_PREFIX=${DEPS_INSTALL_DIR}
         -DSPDLOG_BUILD_EXAMPLES=0
         -DSPDLOG_BUILD_TESTING=0
-        -DCMAKE_BUILD_TYPE=Release
         ${DEPS_BUILD_DIR}/spdlog
-)
+        ${WINDOWS_FLAGS})
 
 list(APPEND THIRD_PARTY_DEPS SpdLog)
diff --git a/src/dialogs/PreviewUploadOverlay.cc b/src/dialogs/PreviewUploadOverlay.cc
index db1e31f2..e01d2b17 100644
--- a/src/dialogs/PreviewUploadOverlay.cc
+++ b/src/dialogs/PreviewUploadOverlay.cc
@@ -31,8 +31,8 @@
 
 using namespace dialogs;
 
-static constexpr const char *DEFAULT = "Upload %1?";
-static constexpr const char *ERROR   = "Failed to load image type '%1'. Continue upload?";
+constexpr const char *DEFAULT = "Upload %1?";
+constexpr const char *ERR_MSG = "Failed to load image type '%1'. Continue upload?";
 
 PreviewUploadOverlay::PreviewUploadOverlay(QWidget *parent)
   : QWidget{parent}
@@ -105,7 +105,7 @@ PreviewUploadOverlay::setLabels(const QString &type, const QString &mime, uint64
 {
         if (mediaType_ == "image") {
                 if (!image_.loadFromData(data_)) {
-                        titleLabel_.setText(QString{tr(ERROR)}.arg(type));
+                        titleLabel_.setText(QString{tr(ERR_MSG)}.arg(type));
                 } else {
                         titleLabel_.setText(QString{tr(DEFAULT)}.arg(mediaType_));
                 }