diff --git a/Pipfile b/Pipfile
index f27dbd0..e42f2b5 100644
--- a/Pipfile
+++ b/Pipfile
@@ -16,7 +16,5 @@ pipenv-setup = "*"
 
 [packages]
 jsonschema = "*"
-"ruamel.yaml" = "*"
+pyyaml = "*"
 
-[requires]
-python_version = "3.8"
diff --git a/Pipfile.lock b/Pipfile.lock
index a4c7c4b..f129588 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,12 +1,10 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "477547462b9a9238e5ce43174e1816564c491d9d1f4b146aca3242149adfa962"
+            "sha256": "2d7d6f40594922ecc5ef17e199c6a4423ac03f275c13a45abb1a8cf2d8ded352"
         },
         "pipfile-spec": 6,
-        "requires": {
-            "python_version": "3.8"
-        },
+        "requires": {},
         "sources": [
             {
                 "name": "pypi",
@@ -18,10 +16,11 @@
     "default": {
         "attrs": {
             "hashes": [
-                "sha256:08a96c641c3a74e44eb59afb61a24f2cb9f4d7188748e76ba4bb5edfa3cb7d1c",
-                "sha256:f7b7ce16570fe9965acd6d30101a28f62fb4a7f9e926b3bbc9b61f8b04247e72"
+                "sha256:149e90d6d8ac20db7a955ad60cf0e6881a3f20d37096140088356da6c716b0b1",
+                "sha256:ef6aaac3ca6cd92904cdd0d83f629a15f18053ec84e6432106f7a4d04ae4f5fb"
             ],
-            "version": "==19.3.0"
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'",
+            "version": "==21.2.0"
         },
         "jsonschema": {
             "hashes": [
@@ -33,24 +32,53 @@
         },
         "pyrsistent": {
             "hashes": [
-                "sha256:cdc7b5e3ed77bed61270a47d35434a30617b9becdf2478af76ad2c6ade307280"
+                "sha256:2e636185d9eb976a18a8a8e96efce62f2905fea90041958d8cc2a189756ebf3e"
             ],
-            "version": "==0.15.7"
+            "markers": "python_version >= '3.5'",
+            "version": "==0.17.3"
         },
-        "ruamel.yaml": {
+        "pyyaml": {
             "hashes": [
-                "sha256:0db639b1b2742dae666c6fc009b8d1931ef15c9276ef31c0673cc6dcf766cf40",
-                "sha256:412a6f5cfdc0525dee6a27c08f5415c7fd832a7afcb7a0ed7319628aed23d408"
+                "sha256:08682f6b72c722394747bddaf0aa62277e02557c0fd1c42cb853016a38f8dedf",
+                "sha256:0f5f5786c0e09baddcd8b4b45f20a7b5d61a7e7e99846e3c799b05c7c53fa696",
+                "sha256:129def1b7c1bf22faffd67b8f3724645203b79d8f4cc81f674654d9902cb4393",
+                "sha256:294db365efa064d00b8d1ef65d8ea2c3426ac366c0c4368d930bf1c5fb497f77",
+                "sha256:3b2b1824fe7112845700f815ff6a489360226a5609b96ec2190a45e62a9fc922",
+                "sha256:3bd0e463264cf257d1ffd2e40223b197271046d09dadf73a0fe82b9c1fc385a5",
+                "sha256:4465124ef1b18d9ace298060f4eccc64b0850899ac4ac53294547536533800c8",
+                "sha256:49d4cdd9065b9b6e206d0595fee27a96b5dd22618e7520c33204a4a3239d5b10",
+                "sha256:4e0583d24c881e14342eaf4ec5fbc97f934b999a6828693a99157fde912540cc",
+                "sha256:5accb17103e43963b80e6f837831f38d314a0495500067cb25afab2e8d7a4018",
+                "sha256:607774cbba28732bfa802b54baa7484215f530991055bb562efbed5b2f20a45e",
+                "sha256:6c78645d400265a062508ae399b60b8c167bf003db364ecb26dcab2bda048253",
+                "sha256:72a01f726a9c7851ca9bfad6fd09ca4e090a023c00945ea05ba1638c09dc3347",
+                "sha256:74c1485f7707cf707a7aef42ef6322b8f97921bd89be2ab6317fd782c2d53183",
+                "sha256:895f61ef02e8fed38159bb70f7e100e00f471eae2bc838cd0f4ebb21e28f8541",
+                "sha256:8c1be557ee92a20f184922c7b6424e8ab6691788e6d86137c5d93c1a6ec1b8fb",
+                "sha256:bb4191dfc9306777bc594117aee052446b3fa88737cd13b7188d0e7aa8162185",
+                "sha256:bfb51918d4ff3d77c1c856a9699f8492c612cde32fd3bcd344af9be34999bfdc",
+                "sha256:c20cfa2d49991c8b4147af39859b167664f2ad4561704ee74c1de03318e898db",
+                "sha256:cb333c16912324fd5f769fff6bc5de372e9e7a202247b48870bc251ed40239aa",
+                "sha256:d2d9808ea7b4af864f35ea216be506ecec180628aced0704e34aca0b040ffe46",
+                "sha256:d483ad4e639292c90170eb6f7783ad19490e7a8defb3e46f97dfe4bacae89122",
+                "sha256:dd5de0646207f053eb0d6c74ae45ba98c3395a571a2891858e87df7c9b9bd51b",
+                "sha256:e1d4970ea66be07ae37a3c2e48b5ec63f7ba6804bdddfdbd3cfd954d25a82e63",
+                "sha256:e4fac90784481d221a8e4b1162afa7c47ed953be40d31ab4629ae917510051df",
+                "sha256:fa5ae20527d8e831e8230cbffd9f8fe952815b2b7dae6ffec25318803a7528fc",
+                "sha256:fd7f6999a8070df521b6384004ef42833b9bd62cfee11a09bda1079b4b704247",
+                "sha256:fdc842473cd33f45ff6bce46aea678a54e3d21f1b61a7750ce3c498eedfe25d6",
+                "sha256:fe69978f3f768926cfa37b867e3843918e012cf83f680806599ddce33c2c68b0"
             ],
             "index": "pypi",
-            "version": "==0.16.5"
+            "version": "==5.4.1"
         },
         "six": {
             "hashes": [
-                "sha256:1f1b7d42e254082a9db6279deae68afb421ceba6158efa6131de7b3003ee93fd",
-                "sha256:30f610279e8b2578cab6db20741130331735c781b56053c59c4076da27f06b66"
+                "sha256:1e61c37477a1626458e36f7b1d82aa5c9b094fa4802892072e49de9c60c4c926",
+                "sha256:8abb2f1d86890a2dfb989f9a77cfcfd3e47c2a354b01111771326f8aa26e0254"
             ],
-            "version": "==1.13.0"
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
+            "version": "==1.16.0"
         }
     },
     "develop": {
@@ -59,28 +87,31 @@
                 "sha256:37228cda29411948b422fae072f57e31d3396d2ee1c9783775980ee9c9990af6",
                 "sha256:58587dd4dc3daefad0487f6d9ae32b4542b185e1c36db6993290e7c41ca2b47c"
             ],
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
             "version": "==1.5"
         },
         "appdirs": {
             "hashes": [
-                "sha256:9e5896d1372858f8dd3344faf4e5014d21849c756c8d5701f78f8a103b372d92",
-                "sha256:d8b24664561d0d34ddfaec54636d502d7cea6e29c3eaf68f3df6180863e2166e"
+                "sha256:7d5d0167b2b1ba821647616af46a749d1c653740dd0d2415100fe26e27afdf41",
+                "sha256:a841dacd6b99318a741b166adb07e19ee71a274450e68237b4650ca1055ab128"
             ],
-            "version": "==1.4.3"
+            "version": "==1.4.4"
         },
         "astroid": {
             "hashes": [
-                "sha256:71ea07f44df9568a75d0f354c49143a4575d90645e9fead6dfb52c26a85ed13a",
-                "sha256:840947ebfa8b58f318d42301cf8c0a20fd794a33b61cc4638e28e9e61ba32f42"
+                "sha256:4db03ab5fc3340cf619dbc25e42c2cc3755154ce6009469766d7143d1fc2ee4e",
+                "sha256:8a398dfce302c13f14bab13e2b14fe385d32b73f4e4853b9bdfb64598baa1975"
             ],
-            "version": "==2.3.3"
+            "markers": "python_version ~= '3.6'",
+            "version": "==2.5.6"
         },
         "attrs": {
             "hashes": [
-                "sha256:08a96c641c3a74e44eb59afb61a24f2cb9f4d7188748e76ba4bb5edfa3cb7d1c",
-                "sha256:f7b7ce16570fe9965acd6d30101a28f62fb4a7f9e926b3bbc9b61f8b04247e72"
+                "sha256:149e90d6d8ac20db7a955ad60cf0e6881a3f20d37096140088356da6c716b0b1",
+                "sha256:ef6aaac3ca6cd92904cdd0d83f629a15f18053ec84e6432106f7a4d04ae4f5fb"
             ],
-            "version": "==19.3.0"
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'",
+            "version": "==21.2.0"
         },
         "black": {
             "hashes": [
@@ -92,142 +123,174 @@
         },
         "cached-property": {
             "hashes": [
-                "sha256:3a026f1a54135677e7da5ce819b0c690f156f37976f3e30c5430740725203d7f",
-                "sha256:9217a59f14a5682da7c4b8829deadbfc194ac22e9908ccf7c8820234e80a1504"
+                "sha256:9fa5755838eecbb2d234c3aa390bd80fbd3ac6b6869109bfc1b499f7bd89a130",
+                "sha256:df4f613cf7ad9a588cc381aaf4a512d26265ecebd5eb9e1ba12f1319eb85a6a0"
             ],
-            "version": "==1.5.1"
+            "version": "==1.5.2"
         },
         "cerberus": {
             "hashes": [
-                "sha256:302e6694f206dd85cb63f13fd5025b31ab6d38c99c50c6d769f8fa0b0f299589",
-                "sha256:bf6a40d83411737c12681befb37d73f0657ab5fa088a2d18805dfdaf267b6f6e"
+                "sha256:d1b21b3954b2498d9a79edf16b3170a3ac1021df88d197dc2ce5928ba519237c"
             ],
-            "version": "==1.3.2"
+            "version": "==1.3.4"
         },
         "certifi": {
             "hashes": [
-                "sha256:017c25db2a153ce562900032d5bc68e9f191e44e9a0f762f373977de9df1fbb3",
-                "sha256:25b64c7da4cd7479594d035c08c2d809eb4aab3a26e5a990ea98cc450c320f1f"
+                "sha256:1a4995114262bffbc2413b159f2a1a480c969de6e6eb13ee966d470af86af59c",
+                "sha256:719a74fb9e33b9bd44cc7f3a8d94bc35e4049deebe19ba7d8e108280cfd59830"
             ],
-            "version": "==2019.11.28"
+            "version": "==2020.12.5"
         },
         "chardet": {
             "hashes": [
-                "sha256:84ab92ed1c4d4f16916e05906b6b75a6c0fb5db821cc65e70cbd64a3e2a5eaae",
-                "sha256:fc323ffcaeaed0e0a02bf4d117757b98aed530d9ed4531e3e15460124c106691"
+                "sha256:0d6f53a15db4120f2b08c94f11e7d93d2c911ee118b6b30a04ec3ee8310179fa",
+                "sha256:f864054d66fd9118f2e67044ac8981a54775ec5b67aed0441892edb553d21da5"
             ],
-            "version": "==3.0.4"
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'",
+            "version": "==4.0.0"
         },
         "click": {
             "hashes": [
-                "sha256:2335065e6395b9e67ca716de5f7526736bfa6ceead690adf616d925bdc622b13",
-                "sha256:5b94b49521f6456670fdb30cd82a4eca9412788a93fa6dd6df72c94d5a8ff2d7"
+                "sha256:8c04c11192119b1ef78ea049e0a6f0463e4c48ef00a30160c704337586f3ad7a",
+                "sha256:fba402a4a47334742d782209a7c79bc448911afe1149d07bdabdf480b3e2f4b6"
             ],
-            "version": "==7.0"
+            "markers": "python_version >= '3.6'",
+            "version": "==8.0.1"
         },
         "colorama": {
             "hashes": [
-                "sha256:05eed71e2e327246ad6b38c540c4a3117230b19679b875190486ddd2d721422d",
-                "sha256:f8ac84de7840f5b9c4e3347b3c1eaa50f7e49c2b07596221daec5edaabbd7c48"
+                "sha256:5941b2b48a20143d2267e95b1c2a7603ce057ee39fd88e7329b0c292aa16869b",
+                "sha256:9f47eda37229f68eee03b24b9748937c7dc3868f906e8ba69fbcbdd3bc5dc3e2"
             ],
-            "version": "==0.4.1"
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'",
+            "version": "==0.4.4"
         },
         "coverage": {
+            "extras": [
+                "toml"
+            ],
             "hashes": [
-                "sha256:189aac76d6e0d7af15572c51892e7326ee451c076c5a50a9d266406cd6c49708",
-                "sha256:1bf7ba2af1d373a1750888724f84cffdfc697738f29a353c98195f98fc011509",
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-                "sha256:23688ff75adfa8bfa2a67254d889f9bdf9302c27241d746e17547c42c732d3f4",
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+                "sha256:5fec2d43a2cc6965edc0bb9e83e1e4b557f76f843a77a2496cbe719583ce8184",
+                "sha256:6c90e11318f0d3c436a42409f2749ee1a115cd8b067d7f14c148f1ce5574d701",
+                "sha256:74d881fc777ebb11c63736622b60cb9e4aee5cace591ce274fb69e582a12a61a",
+                "sha256:7501140f755b725495941b43347ba8a2777407fc7f250d4f5a7d2a1050ba8e82",
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+            "version": "==2.10"
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+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4, 3.5'",
+            "version": "==1.6.0"
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         "mccabe": {
             "hashes": [
@@ -236,13 +299,6 @@
             ],
             "version": "==0.6.1"
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-        "more-itertools": {
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@@ -252,24 +308,25 @@
         },
         "packaging": {
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-                "sha256:d9551545c6d761f3def1677baf08ab2a3ca17c56879e70fecba2fc4dde4ed108"
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-            "version": "==19.2"
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
+            "version": "==20.9"
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-                "sha256:562aa70af2e0d434367d9790ad37aed893de47f1693e4201fd1d3dca15d19b96"
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-            "version": "==0.7.0"
+            "version": "==0.8.1"
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             "hashes": [
-                "sha256:5ce351f3be71d01bb094d63253854b6139931fcaba8e2f380c02102136c51e40",
-                "sha256:882e2eeeffe39ccd6be6122d98300df18d80950cb5f449766d64149c94c5614a"
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-            "version": "==0.8.1"
+            "version": "==0.10.0"
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         "pep8": {
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@@ -280,18 +337,19 @@
         },
         "pip-shims": {
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-                "sha256:383e054386d15f7a33d619a9fc19d670575cdf88e05a4dab93f0a254696ce836",
-                "sha256:d4b720d85a8cbd81f72ea22e273ac72415f1e0b49cade597b815c63b351d9637"
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-            "version": "==0.4.0"
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'",
+            "version": "==0.5.3"
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         "pipenv-setup": {
             "hashes": [
-                "sha256:0dc26686d8e2ea21bdff6c2ed7a8dfd7e21f141eeb413b6db05598d18d9e4bc0",
-                "sha256:6159cd4131292b3e02004ea02cf28121f32e15949cd056a377ce06df81eac790"
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-            "version": "==2.2.5"
+            "version": "==3.1.1"
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@@ -307,6 +365,7 @@
                 "sha256:46402c03e36d6eadddad2a5125990e322dd74f98160c8f2dcd832b2291858a26",
                 "sha256:d6c9b96981b347bddd333910b753b6091a2c1eb2ef85bb373b4a67c9d91dca16"
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             "version": "==0.2.3"
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         "pluggy": {
@@ -314,37 +373,40 @@
                 "sha256:15b2acde666561e1298d71b523007ed7364de07029219b604cf808bfa1c765b0",
                 "sha256:966c145cd83c96502c3c3868f50408687b38434af77734af1e9ca461a4081d2d"
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             "version": "==0.13.1"
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         "py": {
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-                "sha256:c20fdd83a5dbc0af9efd622bee9a5564e278f6380fffcacc43ba6f43db2813b0"
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-            "version": "==1.8.1"
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
+            "version": "==1.10.0"
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         "pylint": {
             "hashes": [
-                "sha256:3db5468ad013380e987410a8d6956226963aed94ecb5f9d3a28acca6d9ac36cd",
-                "sha256:886e6afc935ea2590b462664b161ca9a5e40168ea99e5300935f6591ad467df4"
+                "sha256:586d8fa9b1891f4b725f587ef267abe2a1bad89d6b184520c7f07a253dd6e217",
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-            "version": "==2.4.4"
+            "version": "==2.8.2"
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-                "sha256:c342dccb5250c08d45fd6f8b4a559613ca603b57498511740e65cd11a2e7dcec"
+                "sha256:c203ec8783bf771a155b207279b9bccb8dea02d8f0c9e5f8ead507bc3246ecc1",
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-            "version": "==2.4.6"
+            "markers": "python_version >= '2.6' and python_version not in '3.0, 3.1, 3.2, 3.3'",
+            "version": "==2.4.7"
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         "pytest": {
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-                "sha256:6b571215b5a790f9b41f19f3531c53a45cf6bb8ef2988bc1ff9afb38270b25fa",
-                "sha256:e41d489ff43948babd0fad7ad5e49b8735d5d55e26628a58673c39ff61d95de4"
+                "sha256:50bcad0a0b9c5a72c8e4e7c9855a3ad496ca6a881a3641b4260605450772c54b",
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-            "version": "==5.3.2"
+            "version": "==6.2.4"
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@@ -354,11 +416,11 @@
         },
         "pytest-cov": {
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-                "sha256:cc6742d8bac45070217169f5f72ceee1e0e55b0221f54bcf24845972d3a47f2b",
-                "sha256:cdbdef4f870408ebdbfeb44e63e07eb18bb4619fae852f6e760645fa36172626"
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-            "version": "==2.8.1"
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@@ -369,148 +431,177 @@
         },
         "pytest-pylint": {
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-                "sha256:8c38ea779e540e27ec4378b0820d906006e09f4ac834defbd886abbf57c7d2ec",
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-        "wcwidth": {
-            "hashes": [
-                "sha256:8fd29383f539be45b20bd4df0dc29c20ba48654a41e661925e612311e9f3c603",
-                "sha256:f28b3e8a6483e5d49e7f8949ac1a78314e740333ae305b4ba5defd3e74fb37a8"
-            ],
-            "version": "==0.1.8"
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
+            "version": "==0.5.2"
         },
         "wheel": {
             "hashes": [
-                "sha256:10c9da68765315ed98850f8e048347c3eb06dd81822dc2ab1d4fde9dc9702646",
-                "sha256:f4da1763d3becf2e2cd92a14a7c920f0f00eca30fdde9ea992c836685b9faf28"
+                "sha256:78b5b185f0e5763c26ca1e324373aadd49182ca90e825f7853f4b2509215dc0e",
+                "sha256:e11eefd162658ea59a60a0f6c7d493a7190ea4b9a85e335b33489d9f17e0245e"
             ],
-            "version": "==0.33.6"
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'",
+            "version": "==0.36.2"
         },
         "wrapt": {
             "hashes": [
-                "sha256:565a021fd19419476b9362b05eeaa094178de64f8361e44468f9e9d7843901e1"
+                "sha256:b62ffa81fb85f4332a4f609cab4ac40709470da05643a082ec1eb88e6d9b97d7"
             ],
-            "version": "==1.11.2"
+            "version": "==1.12.1"
         }
     }
 }
diff --git a/backive/config/config.py b/backive/config/config.py
index 07ea8cf..fdb660f 100644
--- a/backive/config/config.py
+++ b/backive/config/config.py
@@ -1,7 +1,7 @@
 import os
 import pwd
 import json
-from ruamel.yaml import YAML
+import yaml as YAML
 import logging
 import jsonschema
 
@@ -20,14 +20,16 @@ class Config:
             self._backups = list()
             self._devices = dict()
             file_path = os.path.realpath(__file__)
+            logging.debug("config file_path: " + file_path)
             schema_path = os.path.join(
                     os.path.dirname(
                         file_path
                     ),
                     "schema.yml"
                 )
+            logging.debug("schema path: " + schema_path)
             with open(schema_path, "r") as stream:
-                self._schema = YAML().load(stream)
+                self._schema = YAML.safe_load(stream)
             self.find_config()
 
     def find_config(self):