diff --git a/openssl-sys/src/ec.rs b/openssl-sys/src/ec.rs
index ffb1a16cc91749b8745207f61e875a80617710bf..e07038488e0f7ebd28739c747005d90b1d41c708 100644
--- a/openssl-sys/src/ec.rs
+++ b/openssl-sys/src/ec.rs
@@ -61,6 +61,8 @@ extern "C" {
 
     pub fn EC_GROUP_get_degree(group: *const EC_GROUP) -> c_int;
 
+    pub fn EC_GROUP_order_bits(group: *const EC_GROUP) -> c_int;
+
     pub fn EC_GROUP_new_curve_GFp(
         p: *const BIGNUM,
         a: *const BIGNUM,
diff --git a/openssl/src/ec.rs b/openssl/src/ec.rs
index d6097bbca9b94e3c64b98d2b7d20e23b34c91bad..600974dc4da6482c35d4ddec144351b051b78f1d 100644
--- a/openssl/src/ec.rs
+++ b/openssl/src/ec.rs
@@ -228,6 +228,15 @@ impl EcGroupRef {
         unsafe { ffi::EC_GROUP_get_degree(self.as_ptr()) as u32 }
     }
 
+    /// Returns the number of bits in the group order.
+    ///
+    /// OpenSSL documentation at [`EC_GROUP_order_bits`]
+    ///
+    /// [`EC_GROUP_order_bits`]: https://www.openssl.org/docs/man1.1.0/crypto/EC_GROUP_order_bits.html
+    pub fn order_bits(&self) -> u32 {
+        unsafe { ffi::EC_GROUP_order_bits(self.as_ptr()) as u32 }
+    }
+
     /// Returns the generator for the given curve as a [`EcPoint`].
     ///
     /// OpenSSL documentation at [`EC_GROUP_get0_generator`]