diff --git a/Setup/DEBIAN/config b/Setup/DEBIAN/config
new file mode 100644
index 0000000..f921132
--- /dev/null
+++ b/Setup/DEBIAN/config
@@ -0,0 +1,72 @@
+#!/bin/sh -e
+
+# Show dialog if repository is not there
+SOURCE_FILE="/etc/apt/sources.list.d/medo64.list"
+if ! [ -f "$SOURCE_FILE" ] && [ "$DEBIAN_FRONTEND" != "noninteractive" ]; then
+    . /usr/share/debconf/confmodule
+
+    db_input high magiwol/add_repository
+    db_go
+    db_get magiwol/add_repository
+    case "$RET" in
+        n*|N*|f*|F*) DO_ADD_REPO=0 ;;
+    esac
+fi
+
+DO_ADD_REPO=0
+SOURCE_FILE="/etc/apt/sources.list.d/medo64.list"
+if ! [ -f "$SOURCE_FILE" ] && [ "$DEBIAN_FRONTEND" != "noninteractive" ]; then
+    . /usr/share/debconf/confmodule
+    db_get magiwol/add_repository
+    case "$RET" in
+        y*|Y*|T*|t*) DO_ADD_REPO=1 ;;
+    esac
+fi
+
+if [ "$DO_ADD_REPO" -ne 0 ]; then
+    echo "deb http://packages.medo64.com/deb stable main" > "$SOURCE_FILE"
+    if [ -d "/etc/apt/trusted.gpg.d/" ]; then
+        echo "-----BEGIN PGP PUBLIC KEY BLOCK-----
+Version: GnuPG v1
+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+=gY4j
+-----END PGP PUBLIC KEY BLOCK-----" > /etc/apt/trusted.gpg.d/medo64.asc
+    else  # add it using deprecated apt-key
+        echo "-----BEGIN PGP PUBLIC KEY BLOCK-----
+Version: GnuPG v1
+
+mQENBFqxbGoBCACnavHwueNmk947TOkLDsnay/4uQIan79YFyHnv2zTFRuszuwFw
+65sbflaBTjR57CZRzNyXHEcPb/NrxxuhXKHOXzbURy6FBv0CQZVjf9bm0Lroq5Ab
+oZ9v0UZukpLoAyHkNca/zyHJoHtAq2Deq5X44dPRsCALn2zWJKya+hyA8ZYnGlcG
+hERdnR8mMB+i0xb44rnDNY7GwdRykSialn3WopSFBrHv9pYOd2wtnrb3H9pFjT3H
+jNp1+3/4mW6WDdVzC7mkJk9ia8mHqAw0IgtE7fP7HYcJnmdqCqgI3sZBR+D1VpyM
+CgNGK6DrGD5IUp1ktZe2wAL8Jig2/Xmk02g7ABEBAAG0L0pvc2lwIE1lZHZlZCAo
+UmVwb3NpdG9yeSkgPGptZWR2ZWRAam1lZHZlZC5jb20+iQE4BBMBCAAiBQJasWxq
+AhsDBgsJCAcDAgYVCAIJCgsEFgIDAQIeAQIXgAAKCRA4LnS5Ecf8hgj0B/0XeXn8
+aPkDLwHJzLbily9SUxn3WYcZhXEE1JSXtDHWI1owS/TT7kZxswHRh1DyZDQJSK0B
+LCsHx1zoIVIvlkGz8PNfN+G/E+2CAI8/cdDBa5z8DM+w8wpQ02NZjWnS5pmpr3MT
+sP7hLlyEeq/ErtKmZMlquDtTR7lUjundgtUIgofiSDiri/1xNynUmPgykkKR/vR2
+mrPHCxIqiEEq5RkFvIDpH6zltld97AeNP2vEcmkpyS9npFRkHgPNjxZhvHhhjbHP
+pXF542bTCX+bXOfPWbdl/mnIBRKdsNGNu/FbXTQ4gEmXQwmki5YL8kRwbBloxuH2
+5VcfjRkkgrnxUy4S
+=gY4j
+-----END PGP PUBLIC KEY BLOCK-----" | apt-key add -
+    fi
+fi
+
+# Done
+exit 0
diff --git a/Setup/DEBIAN/postinst b/Setup/DEBIAN/postinst
index 8151fac..1613a6f 100644
--- a/Setup/DEBIAN/postinst
+++ b/Setup/DEBIAN/postinst
@@ -1,27 +1,9 @@
 #!/bin/bash
+set -e
 
+# Set links
 chmod +x /opt/magiwol/magiwol.exe
 ln -s /opt/magiwol/magiwol.exe /usr/bin/magiwol
 
-echo "deb https://medo64.com/repositories/deb stable main" > /etc/apt/sources.list.d/medo64.list
-echo "-----BEGIN PGP PUBLIC KEY BLOCK-----
-Version: GnuPG v1
-
-mQENBFqxbGoBCACnavHwueNmk947TOkLDsnay/4uQIan79YFyHnv2zTFRuszuwFw
-65sbflaBTjR57CZRzNyXHEcPb/NrxxuhXKHOXzbURy6FBv0CQZVjf9bm0Lroq5Ab
-oZ9v0UZukpLoAyHkNca/zyHJoHtAq2Deq5X44dPRsCALn2zWJKya+hyA8ZYnGlcG
-hERdnR8mMB+i0xb44rnDNY7GwdRykSialn3WopSFBrHv9pYOd2wtnrb3H9pFjT3H
-jNp1+3/4mW6WDdVzC7mkJk9ia8mHqAw0IgtE7fP7HYcJnmdqCqgI3sZBR+D1VpyM
-CgNGK6DrGD5IUp1ktZe2wAL8Jig2/Xmk02g7ABEBAAG0L0pvc2lwIE1lZHZlZCAo
-UmVwb3NpdG9yeSkgPGptZWR2ZWRAam1lZHZlZC5jb20+iQE4BBMBCAAiBQJasWxq
-AhsDBgsJCAcDAgYVCAIJCgsEFgIDAQIeAQIXgAAKCRA4LnS5Ecf8hgj0B/0XeXn8
-aPkDLwHJzLbily9SUxn3WYcZhXEE1JSXtDHWI1owS/TT7kZxswHRh1DyZDQJSK0B
-LCsHx1zoIVIvlkGz8PNfN+G/E+2CAI8/cdDBa5z8DM+w8wpQ02NZjWnS5pmpr3MT
-sP7hLlyEeq/ErtKmZMlquDtTR7lUjundgtUIgofiSDiri/1xNynUmPgykkKR/vR2
-mrPHCxIqiEEq5RkFvIDpH6zltld97AeNP2vEcmkpyS9npFRkHgPNjxZhvHhhjbHP
-pXF542bTCX+bXOfPWbdl/mnIBRKdsNGNu/FbXTQ4gEmXQwmki5YL8kRwbBloxuH2
-5VcfjRkkgrnxUy4S
-=gY4j
------END PGP PUBLIC KEY BLOCK-----" | apt-key add -
-
+# Done
 exit 0
diff --git a/Setup/DEBIAN/postrm b/Setup/DEBIAN/postrm
index 11be65f..8e95612 100644
--- a/Setup/DEBIAN/postrm
+++ b/Setup/DEBIAN/postrm
@@ -1,5 +1,7 @@
 #!/bin/bash
+set -e
 
+# Remove links and config
 if [ "$1" == "remove" ]
 then
     if [ -f "/usr/bin/magiwol" ]
@@ -13,4 +15,11 @@ then
     fi
 fi
 
+# Purge debconf
+if [ "$1" = "purge" -a -e /usr/share/debconf/confmodule ]; then
+    . /usr/share/debconf/confmodule
+    db_purge
+fi
+
+# Done
 exit 0
diff --git a/Setup/DEBIAN/templates b/Setup/DEBIAN/templates
new file mode 100644
index 0000000..3ba9117
--- /dev/null
+++ b/Setup/DEBIAN/templates
@@ -0,0 +1,7 @@
+Template: magiwol/add_repository
+Type: boolean
+Default: true
+Description: Should the repository be added to the system?
+ If selected, the repository for the package will be added for the purpose
+ of simplifying the future upgrades. If not added, each update will have to
+ be manually installed.
diff --git a/Setup/package.sh b/Setup/package.sh
index 809d62c..c2a9544 100644
--- a/Setup/package.sh
+++ b/Setup/package.sh
@@ -108,6 +108,7 @@ cp -R ./usr $DIRECTORY_PACKAGE/
 
 find $DIRECTORY_PACKAGE -type d -exec chmod 755 {} +
 find $DIRECTORY_PACKAGE -type f -exec chmod 644 {} +
+chmod 755 $DIRECTORY_PACKAGE/DEBIAN/config
 chmod 755 $DIRECTORY_PACKAGE/DEBIAN/*inst
 chmod 755 $DIRECTORY_PACKAGE/DEBIAN/*rm