diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 2ac04e551..083725289 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -2,23 +2,30 @@ image: termux/package-builder:latest
 
 stages:
   - build
-  - deploy
 
 ## Common configuration for all build jobs.
+## Variables BINTRAY_* should be unset to
+## prevent leaking of sensitive information.
 .job_template: &build_job
   stage: build
   script:
-    - bash ./scripts/ci/gitlab.sh $TERMUX_ARCH
+    - unset BINTRAY_USERNAME
+    - unset BINTRAY_API_KEY
+    - unset BINTRAY_GPG_SUBJECT
+    - unset BINTRAY_GPG_PASSPHRASE
+    - |
+      for package in $(./scripts/build/ci/determine_git_changes.sh); do
+          ./build-package.sh -q -i -a "$TERMUX_ARCH" "$package" || exit 1
+      done
   retry:
     max: 2
     when:
-      - script_failure
       - runner_system_failure
       - unknown_failure
   artifacts:
     when: always
     paths:
-      - deb-packages
+      - debs
 
 ## Building packages for AArch64.
 build-aarch64:
diff --git a/.travis.yml b/.travis.yml
index 3a7737342..441f34dee 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,12 +1,29 @@
-language: ruby
-sudo: required
-cache: bundler
+language: generic
+
+## Force usage of "Ubuntu Xenial" as on older versions
+## program "realpath" is not working for some reason.
+os: linux
+dist: xenial
 services: docker
-before_script: mkdir debs && chmod 777 debs
+sudo: required
+
+## Split per-architecture builds into separate jobs.
 env:
   matrix:
-    - ARGS="-i -a aarch64"
-    - ARGS="-i -a arm"
-    - ARGS="-i -a i686"
-    - ARGS="-i -a x86_64"
-script: bundle exec rake build["${ARGS}"]
+    - TERMUX_ARCH=aarch64
+    - TERMUX_ARCH=arm
+    - TERMUX_ARCH=i686
+    - TERMUX_ARCH=x86_64
+
+## Build modified packages.
+## Variables BINTRAY_* should be unset to
+## prevent leaking of sensitive information.
+script:
+  - unset BINTRAY_USERNAME
+  - unset BINTRAY_API_KEY
+  - unset BINTRAY_GPG_SUBJECT
+  - unset BINTRAY_GPG_PASSPHRASE
+  - |
+    for package in $(./scripts/build/ci/determine_git_changes.sh); do
+        ./scripts/run-docker.sh ./build-package.sh -q -i -a "$TERMUX_ARCH" "$package" || exit 1
+    done
diff --git a/Gemfile b/Gemfile
deleted file mode 100644
index c6ecfa564..000000000
--- a/Gemfile
+++ /dev/null
@@ -1,4 +0,0 @@
-source 'https://rubygems.org'
-
-gem 'rake'
-gem 'rugged'
diff --git a/Rakefile b/Rakefile
deleted file mode 100644
index 408d0ece3..000000000
--- a/Rakefile
+++ /dev/null
@@ -1,43 +0,0 @@
-require 'rugged'
-require 'pty'
-
-task default: %w[build]
-
-task :build, [:options] do |t, args|
-  repo = Rugged::Repository.new('.')
-  commit = repo.head.target
-  parent = commit.parents.first
-  pkgs = commit.diff(parent).deltas.map { |d| d.new_file[:path] }
-  # Split paths into arrays
-  pkgs.map! { |p| Pathname.new(p).each_filename.to_a }
-  # looking for [disabled-]packages/(package_name)/...
-  pkgs.select! { |p| p.length > 2 and p[0] =~ /(?<disabled->)packages/ }
-  # Get package_name
-  pkgs.map! { |p| p[1] }
-  # Remove duplicate packages
-  pkgs.uniq!
-  pkgs.each do |pkg|
-    puts "Building #{pkg}"
-    begin
-      # Start blocking build loop
-      PTY.spawn("./scripts/run-docker.sh ./build-package.sh #{args[:options]} #{pkg}") do |stdout, stdin, pid|
-        begin
-          stdout.sync
-          stdout.each { |line| print line }
-        rescue Errno::EIO => e
-          puts e
-        ensure
-          ::Process.wait pid
-        end
-      end
-    rescue PTY::ChildExited => e
-      puts e
-      puts "Process exited"
-    end
-    # Exit if PTY return a non-zero code
-    if $?.exitstatus != 0
-      STDERR.puts("Error building #{pkg}")
-      exit($?.exitstatus)
-    end
-  end
-end
diff --git a/scripts/build/ci/determine_git_changes.sh b/scripts/build/ci/determine_git_changes.sh
new file mode 100755
index 000000000..6e9ab7f7e
--- /dev/null
+++ b/scripts/build/ci/determine_git_changes.sh
@@ -0,0 +1,72 @@
+#!/bin/bash
+##
+##  Script for detecting modified packages.
+##  Designed for use with Travis or Gitlab CI.
+##
+##  Leonid Plyushch <leonid.plyushch@gmail.com> (C) 2019
+##
+##  This program is free software: you can redistribute it and/or modify
+##  it under the terms of the GNU General Public License as published by
+##  the Free Software Foundation, either version 3 of the License, or
+##  (at your option) any later version.
+##
+##  This program is distributed in the hope that it will be useful,
+##  but WITHOUT ANY WARRANTY; without even the implied warranty of
+##  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+##  GNU General Public License for more details.
+##
+##  You should have received a copy of the GNU General Public License
+##  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+##
+
+REPO_DIR=$(realpath "$(dirname "$(realpath "$0")")/../../../")
+cd "$REPO_DIR" || {
+	echo "[!] Failed to cd into '$REPO_DIR'." >&2
+	exit 1
+}
+
+if [ -n "$TRAVIS_COMMIT_RANGE" ]; then
+	# We are on Travis CI.
+	UPDATED_FILES=$(git diff-tree --no-commit-id --name-only -r "${TRAVIS_COMMIT_RANGE//.../..}" 2>/dev/null | grep -P "packages/")
+elif [ -n "$CI_COMMIT_SHA" ]; then
+	# We are on Gitlab CI.
+
+	# Make sure that we can use commit range.
+	if [ -z "$CI_COMMIT_BEFORE_SHA" ]; then
+		echo "[!] CI_COMMIT_BEFORE_SHA is not set." >&2
+		exit 1
+	fi
+
+	if [ "$CI_COMMIT_BEFORE_SHA" = "0000000000000000000000000000000000000000" ]; then
+		UPDATED_FILES=$(git diff-tree --no-commit-id --name-only -r "$CI_COMMIT_SHA" 2>/dev/null | grep -P "packages/")
+	else
+		UPDATED_FILES=$(git diff-tree --no-commit-id --name-only -r "${CI_COMMIT_BEFORE_SHA}..${CI_COMMIT_SHA}" 2>/dev/null | grep -P "packages/")
+	fi
+else
+	# Something wrong.
+	echo "[!] Cannot determine git commit range." >&2
+	echo "    Did you executed this script under CI ?" >&2
+	exit 1
+fi
+
+## Determine modified packages.
+existing_dirs=""
+for dir in $(echo "$UPDATED_FILES" | grep -oP "packages/[a-z0-9+._-]+" | sort | uniq); do
+	if [ -d "$REPO_DIR/$dir" ]; then
+		existing_dirs+=" $dir"
+	fi
+done
+PACKAGE_DIRS="$existing_dirs"
+unset dir existing_dirs
+
+## Get names of modified packages.
+PACKAGE_NAMES=$(echo "$PACKAGE_DIRS" | sed 's/packages\///g')
+if [ -z "$PACKAGE_NAMES" ]; then
+	echo "[*] No modified packages found." >&2
+	exit 0
+fi
+
+## Print names of modified packages.
+for pkg in $PACKAGE_NAMES; do
+	echo "$pkg"
+done
diff --git a/scripts/ci/gitlab.sh b/scripts/ci/gitlab.sh
deleted file mode 100755
index 5a8082f73..000000000
--- a/scripts/ci/gitlab.sh
+++ /dev/null
@@ -1,88 +0,0 @@
-#!/bin/bash
-##
-##  Determine updated packages, build them and upload to bintray.com
-##  if requested. This script should be used with GitLab CI.
-##
-##  Leonid Plyushch <leonid.plyushch@gmail.com> (C) 2019
-##
-##  This program is free software: you can redistribute it and/or modify
-##  it under the terms of the GNU General Public License as published by
-##  the Free Software Foundation, either version 3 of the License, or
-##  (at your option) any later version.
-##
-##  This program is distributed in the hope that it will be useful,
-##  but WITHOUT ANY WARRANTY; without even the implied warranty of
-##  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-##  GNU General Public License for more details.
-##
-##  You should have received a copy of the GNU General Public License
-##  along with this program.  If not, see <http://www.gnu.org/licenses/>.
-##
-
-REPO_DIR=$(realpath "$(dirname "$(realpath "$0")")/../../")
-DEBS_DIR="$REPO_DIR/deb-packages"
-cd "$REPO_DIR" || {
-    echo "[!] Failed to cd into '$REPO_DIR'."
-    exit 1
-}
-
-## Create directory where *.deb files will be placed.
-if ! mkdir -p "$DEBS_DIR" > /dev/null 2>&1; then
-    echo "[!] Failed to create directory '$DEBS_DIR'."
-    exit 1
-fi
-
-## Verify that script is running under CI (GitLab).
-if [ -z "${CI_COMMIT_BEFORE_SHA}" ]; then
-    echo "[!] CI_COMMIT_BEFORE_SHA is not set !"
-    exit 1
-fi
-if [ -z "${CI_COMMIT_SHA}" ]; then
-    echo "[!] CI_COMMIT_SHA is not set !"
-    exit 1
-fi
-
-## Check for updated files.
-if [ "$CI_COMMIT_BEFORE_SHA" = "0000000000000000000000000000000000000000" ]; then
-    UPDATED_FILES=$(git diff-tree --no-commit-id --name-only -r "${CI_COMMIT_SHA}" | grep -P "packages/")
-else
-    UPDATED_FILES=$(git diff-tree --no-commit-id --name-only -r "${CI_COMMIT_BEFORE_SHA}..${CI_COMMIT_SHA}" | grep -P "packages/")
-fi
-
-## Determine modified packages.
-existing_dirs=""
-for dir in $(echo "$UPDATED_FILES" | grep -oP "packages/[a-z0-9+._-]+" | sort | uniq); do
-    if [ -d "$REPO_DIR/$dir" ]; then
-	existing_dirs+=" $dir"
-    fi
-done
-PACKAGE_DIRS="$existing_dirs"
-unset dir existing_dirs
-
-## Get names of modified packages.
-PACKAGE_NAMES=$(echo "$PACKAGE_DIRS" | sed 's/packages\///g')
-if [ -z "$PACKAGE_NAMES" ]; then
-    echo "[*] No modified packages found."
-    exit 0
-fi
-
-## Handle arguments.
-## Script expects only one command line argument.
-## It should be either architecture (aarch64, arm, i686, x86_64)
-## or '--upload'.
-if [ $# -ge 1 ]; then
-    if [ "$1" = "--upload" ]; then
-	exec "$REPO_DIR/scripts/bintray-add-package.sh" --path "$DEBS_DIR" $PACKAGE_NAMES
-    else
-	TERMUX_ARCH="$1"
-	unset BINTRAY_USERNAME
-	unset BINTRAY_API_KEY
-    fi
-else
-    TERMUX_ARCH="aarch64"
-fi
-
-echo "[@] Building packages for architecture '$TERMUX_ARCH':"
-for pkg in $PACKAGE_NAMES; do
-    ./build-package.sh -i -f -o "$DEBS_DIR" -a "$TERMUX_ARCH" "$(basename "$pkg")"
-done