diff --git a/.appveyor.yml b/.appveyor.yml
deleted file mode 100644
index d8504f7..0000000
--- a/.appveyor.yml
+++ /dev/null
@@ -1,82 +0,0 @@
-version: '{build}'
-
-image: Visual Studio 2015
-
-cache:
-- sqlite-dll-win32-x86-3240000.zip -> .appveyor.yml
-- sqlite-dll-win64-x64-3240000.zip -> .appveyor.yml
-- nimbus-deps.zip -> .appveyor.yml
-- NimBinaries
-
-matrix:
-  # We always want 32 and 64-bit compilation
-  fast_finish: false
-
-platform:
-  - x86
-  - x64
-
-# when multiple CI builds are queued, the tested commit needs to be in the last X commits cloned with "--depth X"
-clone_depth: 10
-
-install:
-  - setlocal EnableExtensions EnableDelayedExpansion
-
-  - IF "%PLATFORM%" == "x86" (
-      SET "SQLITE_URL=https://www.sqlite.org/2018/sqlite-dll-win32-x86-3240000.zip" &
-      SET "SQLITE_ARCHIVE=sqlite-dll-win32-x86-3240000.zip" &
-      SET "ROCKSDB_URL=https://github.com/status-im/nimbus-deps/releases/download/nimbus-deps/nimbus-deps.zip" &
-      SET "ROCKSDB_ARCHIVE=nimbus-deps.zip"
-    )
-  - IF "%PLATFORM%" == "x64" (
-      SET "SQLITE_URL=https://www.sqlite.org/2018/sqlite-dll-win64-x64-3240000.zip" &
-      SET "SQLITE_ARCHIVE=sqlite-dll-win64-x64-3240000.zip" &
-      SET "ROCKSDB_URL=https://github.com/status-im/nimbus-deps/releases/download/nimbus-deps/nimbus-deps.zip" &
-      SET "ROCKSDB_ARCHIVE=nimbus-deps.zip"
-    )
-
-  # use the newest versions documented here: https://www.appveyor.com/docs/windows-images-software/#mingw-msys-cygwin
-  - IF "%PLATFORM%" == "x86" SET PATH=C:\mingw-w64\i686-6.3.0-posix-dwarf-rt_v5-rev1\mingw32\bin;%PATH%
-  - IF "%PLATFORM%" == "x64" SET PATH=C:\mingw-w64\x86_64-8.1.0-posix-seh-rt_v6-rev0\mingw64\bin;%PATH%
-
-  - MKDIR %CD%\bin
-  - SET PATH=%CD%\bin;%CD%\Nim\bin;%PATH%
-
-  # Unpack sqlite
-  - IF not exist "%SQLITE_ARCHIVE%" appveyor DownloadFile "%SQLITE_URL%" -FileName "%SQLITE_ARCHIVE%"
-  - 7z x -y "%SQLITE_ARCHIVE%" > nul
-  - IF "%PLATFORM%" == "x64" ( copy %CD%\sqlite3.dll %CD%\bin\sqlite3_64.dll ) ELSE ( copy %CD%\sqlite3.dll %CD%\bin\sqlite3_32.dll )
-
-  # Unpack rocksdb
-  - IF not exist "%ROCKSDB_ARCHIVE%" appveyor DownloadFile "%ROCKSDB_URL%" -FileName "%ROCKSDB_ARCHIVE%"
-  - 7z x -y "%ROCKSDB_ARCHIVE%" > nul
-  - IF "%PLATFORM%" == "x64" ( copy %CD%\x64\librocksdb.dll %CD%\bin\librocksdb.dll ) ELSE ( copy %CD%\x86\librocksdb.dll %CD%\bin\librocksdb.dll )
-
-  # download and build lmdb
-  - SET "LMDB_URL=https://github.com/LMDB/lmdb/archive"
-  - SET "LMDB_VER=0.9.22"
-  - SET "LMDB_ARCHIVE=LMDB_%LMDB_VER%.tar.gz"
-  - SET "LMDB_PATH=lmdb-LMDB_%LMDB_VER%\libraries\liblmdb"
-  - appveyor DownloadFile "%LMDB_URL%\%LMDB_ARCHIVE%" - FileName "%LMDB_ARCHIVE%"
-  - tar xzf %LMDB_ARCHIVE%
-  - cd %LMDB_PATH%
-  - gcc -march=native -O3 -pipe -shared -o lmdb.dll mdb.c midl.c -lntdll
-  - cd ..\..\..
-  - copy %LMDB_PATH%\lmdb.dll %CD%\bin\lmdb.dll
-
-  # build nim from our own branch - this to avoid the day-to-day churn and
-  # regressions of the fast-paced Nim development while maintaining the
-  # flexibility to apply patches
-  - curl -O -L -s -S https://raw.githubusercontent.com/status-im/nimbus-build-system/master/scripts/build_nim.sh
-  - env MAKE="mingw32-make -j2" ARCH_OVERRIDE=%PLATFORM% bash build_nim.sh Nim csources dist/nimble NimBinaries
-
-build_script:
-  - cd C:\projects\%APPVEYOR_PROJECT_SLUG%
-  - bash -c "nimble install -y --depsOnly"
-
-test_script:
-  - nimble test
-  - nimble build_dcli
-
-deploy: off
-
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 2a3ad32..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,49 +0,0 @@
-language: c
-
-# https://docs.travis-ci.com/user/caching/
-cache:
-  ccache: true
-  directories:
-    - NimBinaries
-    - rocksdbCache
-
-git:
-  # when multiple CI builds are queued, the tested commit needs to be in the last X commits cloned with "--depth X"
-  depth: 10
-
-matrix:
-  include:
-    - os: linux
-      sudo: required
-      before_install:
-        - export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:/usr/local/lib"
-    - os: osx
-      before_install:
-        - launchctl setenv LIBRARY_PATH /usr/local/lib # for RocksDB
-        - HOMEBREW_NO_AUTO_UPDATE=1 HOMEBREW_NO_INSTALL_CLEANUP=1 brew install ccache
-        - export PATH="/usr/local/opt/ccache/libexec:$PATH"
-
-install:
-  # build nim from our own branch - this to avoid the day-to-day churn and
-  # regressions of the fast-paced Nim development while maintaining the
-  # flexibility to apply patches
-  - curl -O -L -s -S https://raw.githubusercontent.com/status-im/nimbus-build-system/master/scripts/build_nim.sh
-  - env MAKE="make -j2" bash build_nim.sh Nim csources dist/nimble NimBinaries
-  - export PATH=$PWD/Nim/bin:$PATH
-
-  # build our own rocksdb to test with a fixed version that we think works
-  - curl -O -L -s -S https://raw.githubusercontent.com/status-im/nimbus-build-system/master/scripts/build_rocksdb.sh
-  - bash build_rocksdb.sh rocksdbCache
-
-  # no need to cache, lmdb is small and compiles very fast
-  - export LMDBVER="0.9.22"
-  - "wget https://github.com/LMDB/lmdb/archive/LMDB_$LMDBVER.tar.gz && tar xzf LMDB_$LMDBVER.tar.gz;"
-  - cd lmdb-LMDB_$LMDBVER/libraries/liblmdb && make -j2
-  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then sed -i 's| liblmdb.a||' Makefile && sudo make prefix=/usr install; fi
-  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then sudo cp -a liblmdb.so /usr/local/lib/liblmdb.dylib; fi
-  - cd ../../..
-
-script:
-  - nimble install -y --depsOnly
-  - nimble test
-  - nimble build_dcli