diff --git a/pkgs/development/python-modules/yamale/default.nix b/pkgs/development/python-modules/yamale/default.nix
new file mode 100644
index 00000000000..d6fb713185d
--- /dev/null
+++ b/pkgs/development/python-modules/yamale/default.nix
@@ -0,0 +1,38 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, isPy3k
+, pytest
+, pyyaml
+, ruamel_yaml
+}:
+
+buildPythonPackage rec {
+  pname = "yamale";
+  version = "3.0.4";
+
+  disabled = !isPy3k;
+
+  src = fetchFromGitHub {
+    owner = "23andMe";
+    repo = pname;
+    rev = version;
+    sha256 = "1xjvah4r3gpwk4zxql3c9jpllb34k175fm6iq1zvsd2vv2fwf8s2";
+  };
+
+  propagatedBuildInputs = [
+    pyyaml
+    ruamel_yaml
+  ];
+
+  checkInputs = [
+    pytest
+  ];
+
+  meta = with lib; {
+    description = "A schema and validator for YAML.";
+    homepage = "https://github.com/23andMe/Yamale";
+    license = licenses.mit;
+    maintainers = with maintainers; [ rtburns-jpl ];
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index f08a50be658..fd3a188532c 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -27991,6 +27991,8 @@ in
 
   yadm = callPackage ../applications/version-management/yadm { };
 
+  yamale = with python3Packages; toPythonApplication yamale;
+
   yamdi = callPackage ../tools/video/yamdi { };
 
   yandex-disk = callPackage ../tools/filesystems/yandex-disk { };
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index aab9f760dba..691163d5f9f 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -7687,6 +7687,8 @@ in {
 
   yahooweather = callPackage ../development/python-modules/yahooweather { };
 
+  yamale = callPackage ../development/python-modules/yamale { };
+
   yamllint = callPackage ../development/python-modules/yamllint { };
 
   yamlordereddictloader = callPackage ../development/python-modules/yamlordereddictloader { };