diff --git a/.coveragerc b/.coveragerc
index 2e88840..d5ae331 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -1,4 +1,6 @@
 [run]
 branch = true
+source =
+    kosmorrolib
 omit =
     test/*
diff --git a/.github/workflows/unit-tests.yml b/.github/workflows/unit-tests.yml
index 633de84..48872fd 100644
--- a/.github/workflows/unit-tests.yml
+++ b/.github/workflows/unit-tests.yml
@@ -18,7 +18,7 @@ jobs:
         pipenv sync -d
     - name: Unit tests
       env:
-        CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
+        COVERALLS_TOKEN: ${{ secrets.COVERALLS_TOKEN }}
       run: |
         pipenv run python -m coverage run -m unittest test
-        pipenv run codecov --token=$CODECOV_TOKEN
+        COVERALLS_REPO_TOKEN=$COVERALLS_TOKEN pipenv run coveralls
diff --git a/Pipfile b/Pipfile
index 4f9132a..0074f6c 100644
--- a/Pipfile
+++ b/Pipfile
@@ -6,9 +6,9 @@ verify_ssl = true
 [dev-packages]
 pylintfileheader = "*"
 pylint = "*"
-codecov = "*"
 babel = "*"
 unittest-data-provider = "*"
+coveralls = "*"
 
 [packages]
 skyfield = ">=1.13.0,<2.0.0"
diff --git a/Pipfile.lock b/Pipfile.lock
index 9f6d8ff..84b2b70 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "4bcfaa3140b0b5c03886cf6877b37a1eb9df4e175f43d3ce0c1312496cde8515"
+            "sha256": "afd17771258a86b04cab79d21d2afbfb1faf44bbe6e760da9140e72b0999a5b1"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -64,30 +64,30 @@
         },
         "numpy": {
             "hashes": [
-                "sha256:00d7b54c025601e28f468953d065b9b121ddca7fff30bed7be082d3656dd798d",
-                "sha256:02ec9582808c4e48be4e93cd629c855e644882faf704bc2bd6bbf58c08a2a897",
-                "sha256:0e6f72f7bb08f2f350ed4408bb7acdc0daba637e73bce9f5ea2b207039f3af88",
-                "sha256:1be2e96314a66f5f1ce7764274327fd4fb9da58584eaff00b5a5221edefee7d6",
-                "sha256:2466fbcf23711ebc5daa61d28ced319a6159b260a18839993d871096d66b93f7",
-                "sha256:2b573fcf6f9863ce746e4ad00ac18a948978bb3781cffa4305134d31801f3e26",
-                "sha256:3f0dae97e1126f529ebb66f3c63514a0f72a177b90d56e4bce8a0b5def34627a",
-                "sha256:50fb72bcbc2cf11e066579cb53c4ca8ac0227abb512b6cbc1faa02d1595a2a5d",
-                "sha256:57aea170fb23b1fd54fa537359d90d383d9bf5937ee54ae8045a723caa5e0961",
-                "sha256:709c2999b6bd36cdaf85cf888d8512da7433529f14a3689d6e37ab5242e7add5",
-                "sha256:7d59f21e43bbfd9a10953a7e26b35b6849d888fc5a331fa84a2d9c37bd9fe2a2",
-                "sha256:904b513ab8fbcbdb062bed1ce2f794ab20208a1b01ce9bd90776c6c7e7257032",
-                "sha256:96dd36f5cdde152fd6977d1bbc0f0561bccffecfde63cd397c8e6033eb66baba",
-                "sha256:9933b81fecbe935e6a7dc89cbd2b99fea1bf362f2790daf9422a7bb1dc3c3085",
-                "sha256:bbcc85aaf4cd84ba057decaead058f43191cc0e30d6bc5d44fe336dc3d3f4509",
-                "sha256:dccd380d8e025c867ddcb2f84b439722cf1f23f3a319381eac45fd077dee7170",
-                "sha256:e22cd0f72fc931d6abc69dc7764484ee20c6a60b0d0fee9ce0426029b1c1bdae",
-                "sha256:ed722aefb0ebffd10b32e67f48e8ac4c5c4cf5d3a785024fdf0e9eb17529cd9d",
-                "sha256:efb7ac5572c9a57159cf92c508aad9f856f1cb8e8302d7fdb99061dbe52d712c",
-                "sha256:efdba339fffb0e80fcc19524e4fdbda2e2b5772ea46720c44eaac28096d60720",
-                "sha256:f22273dd6a403ed870207b853a856ff6327d5cbce7a835dfa0645b3fc00273ec"
+                "sha256:0172304e7d8d40e9e49553901903dc5f5a49a703363ed756796f5808a06fc233",
+                "sha256:34e96e9dae65c4839bd80012023aadd6ee2ccb73ce7fdf3074c62f301e63120b",
+                "sha256:3676abe3d621fc467c4c1469ee11e395c82b2d6b5463a9454e37fe9da07cd0d7",
+                "sha256:3dd6823d3e04b5f223e3e265b4a1eae15f104f4366edd409e5a5e413a98f911f",
+                "sha256:4064f53d4cce69e9ac613256dc2162e56f20a4e2d2086b1956dd2fcf77b7fac5",
+                "sha256:4674f7d27a6c1c52a4d1aa5f0881f1eff840d2206989bae6acb1c7668c02ebfb",
+                "sha256:7d42ab8cedd175b5ebcb39b5208b25ba104842489ed59fbb29356f671ac93583",
+                "sha256:965df25449305092b23d5145b9bdaeb0149b6e41a77a7d728b1644b3c99277c1",
+                "sha256:9c9d6531bc1886454f44aa8f809268bc481295cf9740827254f53c30104f074a",
+                "sha256:a78e438db8ec26d5d9d0e584b27ef25c7afa5a182d1bf4d05e313d2d6d515271",
+                "sha256:a7acefddf994af1aeba05bbbafe4ba983a187079f125146dc5859e6d817df824",
+                "sha256:a87f59508c2b7ceb8631c20630118cc546f1f815e034193dc72390db038a5cb3",
+                "sha256:ac792b385d81151bae2a5a8adb2b88261ceb4976dbfaaad9ce3a200e036753dc",
+                "sha256:b03b2c0badeb606d1232e5f78852c102c0a7989d3a534b3129e7856a52f3d161",
+                "sha256:b39321f1a74d1f9183bf1638a745b4fd6fe80efbb1f6b32b932a588b4bc7695f",
+                "sha256:cae14a01a159b1ed91a324722d746523ec757357260c6804d11d6147a9e53e3f",
+                "sha256:cd49930af1d1e49a812d987c2620ee63965b619257bd76eaaa95870ca08837cf",
+                "sha256:e15b382603c58f24265c9c931c9a45eebf44fe2e6b4eaedbb0d025ab3255228b",
+                "sha256:e91d31b34fc7c2c8f756b4e902f901f856ae53a93399368d9a0dc7be17ed2ca0",
+                "sha256:ef627986941b5edd1ed74ba89ca43196ed197f1a206a3f18cc9faf2fb84fd675",
+                "sha256:f718a7949d1c4f622ff548c572e0c03440b49b9531ff00e4ed5738b459f011e8"
             ],
             "index": "pypi",
-            "version": "==1.18.4"
+            "version": "==1.18.5"
         },
         "python-dateutil": {
             "hashes": [
@@ -204,13 +204,6 @@
             ],
             "version": "==3.0.4"
         },
-        "codecov": {
-            "hashes": [
-                "sha256:2ebd639d8f621aabcce399e475b0302e436cb7e00e7724d1b2224bbf3f215a0c"
-            ],
-            "index": "pypi",
-            "version": "==2.1.3"
-        },
         "coverage": {
             "hashes": [
                 "sha256:00f1d23f4336efc3b311ed0d807feb45098fc86dee1ca13b3d6768cdab187c8a",
@@ -247,6 +240,20 @@
             ],
             "version": "==5.1"
         },
+        "coveralls": {
+            "hashes": [
+                "sha256:41bd57b60321dfd5b56e990ab3f7ed876090691c21a9e3b005e1f6e42e6ba4b9",
+                "sha256:d213f5edd49053d03f0db316ccabfe17725f2758147afc9a37eaca9d8e8602b5"
+            ],
+            "index": "pypi",
+            "version": "==2.0.0"
+        },
+        "docopt": {
+            "hashes": [
+                "sha256:49b3a825280bd66b3aa83585ef59c4a8c82f2c8a522dbe754a8bc8d08c85c491"
+            ],
+            "version": "==0.6.2"
+        },
         "idna": {
             "hashes": [
                 "sha256:7588d1c14ae4c77d74036e8c22ff447b26d0fde8f007354fd48a7814db15b7cb",
@@ -338,6 +345,33 @@
             ],
             "version": "==0.10.1"
         },
+        "typed-ast": {
+            "hashes": [
+                "sha256:0666aa36131496aed8f7be0410ff974562ab7eeac11ef351def9ea6fa28f6355",
+                "sha256:0c2c07682d61a629b68433afb159376e24e5b2fd4641d35424e462169c0a7919",
+                "sha256:249862707802d40f7f29f6e1aad8d84b5aa9e44552d2cc17384b209f091276aa",
+                "sha256:24995c843eb0ad11a4527b026b4dde3da70e1f2d8806c99b7b4a7cf491612652",
+                "sha256:269151951236b0f9a6f04015a9004084a5ab0d5f19b57de779f908621e7d8b75",
+                "sha256:4083861b0aa07990b619bd7ddc365eb7fa4b817e99cf5f8d9cf21a42780f6e01",
+                "sha256:498b0f36cc7054c1fead3d7fc59d2150f4d5c6c56ba7fb150c013fbc683a8d2d",
+                "sha256:4e3e5da80ccbebfff202a67bf900d081906c358ccc3d5e3c8aea42fdfdfd51c1",
+                "sha256:6daac9731f172c2a22ade6ed0c00197ee7cc1221aa84cfdf9c31defeb059a907",
+                "sha256:715ff2f2df46121071622063fc7543d9b1fd19ebfc4f5c8895af64a77a8c852c",
+                "sha256:73d785a950fc82dd2a25897d525d003f6378d1cb23ab305578394694202a58c3",
+                "sha256:8c8aaad94455178e3187ab22c8b01a3837f8ee50e09cf31f1ba129eb293ec30b",
+                "sha256:8ce678dbaf790dbdb3eba24056d5364fb45944f33553dd5869b7580cdbb83614",
+                "sha256:aaee9905aee35ba5905cfb3c62f3e83b3bec7b39413f0a7f19be4e547ea01ebb",
+                "sha256:bcd3b13b56ea479b3650b82cabd6b5343a625b0ced5429e4ccad28a8973f301b",
+                "sha256:c9e348e02e4d2b4a8b2eedb48210430658df6951fa484e59de33ff773fbd4b41",
+                "sha256:d205b1b46085271b4e15f670058ce182bd1199e56b317bf2ec004b6a44f911f6",
+                "sha256:d43943ef777f9a1c42bf4e552ba23ac77a6351de620aa9acf64ad54933ad4d34",
+                "sha256:d5d33e9e7af3b34a40dc05f498939f0ebf187f07c385fd58d591c533ad8562fe",
+                "sha256:fc0fea399acb12edbf8a628ba8d2312f583bdbdb3335635db062fa98cf71fca4",
+                "sha256:fe460b922ec15dd205595c9b5b99e2f056fd98ae8f9f56b888e7a17dc2b757e7"
+            ],
+            "markers": "implementation_name == 'cpython' and python_version < '3.8'",
+            "version": "==1.4.1"
+        },
         "unittest-data-provider": {
             "hashes": [
                 "sha256:86bc7fb6608c2570aeedadea346fe3034afc940807dd7519e95e5dbc899ac2be"
diff --git a/README.md b/README.md
index fbb021b..4370722 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
 # ![Kosmorro](kosmorrolib/assets/png/kosmorro-logo.png)
-[![codecov](https://codecov.io/gh/Deuchnord/kosmorro/branch/master/graph/badge.svg)](https://codecov.io/gh/Deuchnord/kosmorro) [![Version on PyPI](https://img.shields.io/pypi/v/kosmorro)](https://pypi.org/project/kosmorro) [![Discord](https://img.shields.io/discord/650237632533757965?logo=discord&label=%23kosmorro)](https://discord.gg/nyemBqE)
+[![Coverage Status](https://coveralls.io/repos/github/Deuchnord/kosmorro/badge.svg)](https://coveralls.io/github/Deuchnord/kosmorro) [![Version on PyPI](https://img.shields.io/pypi/v/kosmorro)](https://pypi.org/project/kosmorro) [![Discord](https://img.shields.io/discord/650237632533757965?logo=discord&label=%23kosmorro)](https://discord.gg/nyemBqE)
 
 ## About the project