diff --git a/README.md b/README.md
index 4be241732..c669288f9 100644
--- a/README.md
+++ b/README.md
@@ -170,7 +170,8 @@ perform also an evaluation check, which must be passed for your repository. Comm
 `repos.json` but NOT `repos.json.lock`
 
 ```
-$ git add repo.json
+$ git add repos.json
+$ ./nur/format_repos_manifest # ensure repos.json is sorted alphabetically
 $ git commit -m "add <your-repo-name> repository"
 $ git push
 ```
diff --git a/ci/deploy.sh b/ci/deploy.sh
index b150e6b1d..292fd935c 100755
--- a/ci/deploy.sh
+++ b/ci/deploy.sh
@@ -14,6 +14,14 @@ fi
 
 export encrypted_025d6e877aa4_key= encrypted_025d6e877aa4_iv=
 
+./nur/format_repos_manifest
+if [ -n "$(git diff --exit-code repos.json)" ]; then
+  echo "repos.json was not formatted before committing repos.json:" >&2
+  git diff --exit-code repos.json
+  echo "Please run ./nur/format_repos_manifest and updates repos.json accordingly!" >&2
+  exit 1
+fi
+
 ./nur/update.py
 nix-build
 
diff --git a/nur/format_repos_manifest b/nur/format_repos_manifest
new file mode 100755
index 000000000..4db723555
--- /dev/null
+++ b/nur/format_repos_manifest
@@ -0,0 +1,21 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -p python3 -i python3
+
+import json
+import shutil
+from pathlib import Path
+
+ROOT = Path(__file__).parent.parent
+
+
+def main() -> None:
+    path = ROOT.joinpath("repos.json")
+    manifest = json.load(open(path))
+    tmp_path = str(path) + ".tmp"
+    with open(tmp_path, "w+") as tmp:
+        json.dump(manifest, tmp, indent=4, sort_keys=True)
+    shutil.move(tmp_path, path)
+
+
+if __name__ == "__main__":
+    main()
diff --git a/nur/update.py b/nur/update.py
index 273b65f32..ccd375fc1 100755
--- a/nur/update.py
+++ b/nur/update.py
@@ -148,7 +148,7 @@ def update_lock_file(repos: List[Repo]):
 
     tmp_file = str(LOCK_PATH) + "-new"
     with open(tmp_file, "w") as lock_file:
-        json.dump(dict(repos=locked_repos), lock_file, indent=4)
+        json.dump(dict(repos=locked_repos), lock_file, indent=4, sort_keys=True)
 
     shutil.move(tmp_file, LOCK_PATH)
 
diff --git a/repos.json b/repos.json
index 88fdd834e..f2dac38cb 100644
--- a/repos.json
+++ b/repos.json
@@ -1,13 +1,13 @@
 {
     "repos": {
-        "dywedir":{
+        "dywedir": {
             "url": "https://github.com/dywedir/nur-packages"
         },
-        "mic92": {
-            "url": "https://github.com/Mic92/nur-packages"
-        },
         "eeva": {
             "url": "https://framagit.org/eeva/nur-packages"
+        },
+        "mic92": {
+            "url": "https://github.com/Mic92/nur-packages"
         }
     }
-}
+}
\ No newline at end of file
diff --git a/repos.json.lock b/repos.json.lock
index 57fe4f651..a6c3f66d9 100644
--- a/repos.json.lock
+++ b/repos.json.lock
@@ -5,15 +5,15 @@
             "sha256": "1kqvvprnvcnf6r482y9pyl0kd957kl129fx46v4vgvnql9a8rh19",
             "url": "https://github.com/dywedir/nur-packages"
         },
-        "mic92": {
-            "rev": "f16345720229519cc9e72167c187806829fd8fc5",
-            "sha256": "0birygrcrivzdah0y0bshphrrwsrk0bbba2yz6d2yqms193vbb0k",
-            "url": "https://github.com/Mic92/nur-packages"
-        },
         "eeva": {
             "rev": "1702147af6ec29a955b59c58da07a018c588e11d",
             "sha256": "013dzdc1zwqpcsnsgx9b7qzzkha1rhwaq6jvaf3dq19jkwgddxl2",
             "url": "https://framagit.org/eeva/nur-packages"
+        },
+        "mic92": {
+            "rev": "f16345720229519cc9e72167c187806829fd8fc5",
+            "sha256": "0birygrcrivzdah0y0bshphrrwsrk0bbba2yz6d2yqms193vbb0k",
+            "url": "https://github.com/Mic92/nur-packages"
         }
     }
 }
\ No newline at end of file