--- a/crates/jrsonnet-evaluator/src/builtin/mod.rs
+++ b/crates/jrsonnet-evaluator/src/builtin/mod.rs
@@ -89,6 +89,7 @@
 			("ceil".into(), builtin_ceil),
 			("log".into(), builtin_log),
 			("pow".into(), builtin_pow),
+			("sqrt".into(), builtin_sqrt),
 			("extVar".into(), builtin_ext_var),
 			("native".into(), builtin_native),
 			("filter".into(), builtin_filter),
@@ -304,6 +305,14 @@
 	})
 }
 
+fn builtin_sqrt(context: Context, _loc: Option<&ExprLocation>, args: &ArgsDesc) -> Result<Val> {
+	parse_args!(context, "sqrt", args, 1, [
+		0, x: ty!(BoundedNumber<(Some(0.0)), (None)>) => Val::Num;
+	], {
+		Ok(Val::Num(x.sqrt()))
+	})
+}
+
 fn builtin_ext_var(context: Context, _loc: Option<&ExprLocation>, args: &ArgsDesc) -> Result<Val> {
 	parse_args!(context, "extVar", args, 1, [
 		0, x: ty!(string) => Val::Str;
--- a/crates/jrsonnet-stdlib/src/std.jsonnet
+++ b/crates/jrsonnet-stdlib/src/std.jsonnet
@@ -13,8 +13,6 @@
   modulo:: $intrinsic(modulo),
   floor:: $intrinsic(floor),
   ceil:: $intrinsic(ceil),
-  log:: $intrinsic(log),
-  pow:: $intrinsic(pow),
   extVar:: $intrinsic(extVar),
   native:: $intrinsic(native),
   filter:: $intrinsic(filter),
@@ -25,6 +23,10 @@
   id:: $intrinsic(id),
   parseJson:: $intrinsic(parseJson),
 
+  log:: $intrinsic(log),
+  pow:: $intrinsic(pow),
+  sqrt:: $intrinsic(sqrt),
+
   isString(v):: std.type(v) == 'string',
   isNumber(v):: std.type(v) == 'number',
   isBoolean(v):: std.type(v) == 'boolean',