diff --git a/frost-core/CHANGELOG.md b/frost-core/CHANGELOG.md
index 515941b5..915ef475 100644
--- a/frost-core/CHANGELOG.md
+++ b/frost-core/CHANGELOG.md
@@ -6,6 +6,10 @@ Entries are listed in reverse chronological order.
 
 * Added refresh share functionality for trusted dealer:
   `frost_core::keys::refresh::{compute_refreshing_shares, refresh_share}`
+* Added a `'static` bound to the `Ciphersuite` trait. This is a breaking change,
+  but it's likely to not require any code changes since most ciphersuite
+  implementations are probably just empty structs. The bound makes it possible
+  to use `frost_core::Error<C>` in `Box<dyn std::error::Error>`.
 
 ## 2.0.0-rc.0
 
diff --git a/frost-core/src/traits.rs b/frost-core/src/traits.rs
index a1ff62fe..3e0d9365 100644
--- a/frost-core/src/traits.rs
+++ b/frost-core/src/traits.rs
@@ -138,7 +138,8 @@ pub type Element<C> = <<C as Ciphersuite>::Group as Group>::Element;
 /// function.
 ///
 /// [FROST ciphersuite]: https://datatracker.ietf.org/doc/html/rfc9591#name-ciphersuites
-pub trait Ciphersuite: Copy + Clone + PartialEq + Debug {
+// See https://github.com/ZcashFoundation/frost/issues/693 for reasoning about the 'static bound.
+pub trait Ciphersuite: Copy + Clone + PartialEq + Debug + 'static {
     /// The ciphersuite ID string. It should be equal to the contextString in
     /// the spec. For new ciphersuites, this should be a string that identifies
     /// the ciphersuite; it's recommended to use a similar format to the