diff --git a/bindings/matrix-sdk-crypto-ffi/src/machine.rs b/bindings/matrix-sdk-crypto-ffi/src/machine.rs
index 1cdace317da..c5daafd1a0b 100644
--- a/bindings/matrix-sdk-crypto-ffi/src/machine.rs
+++ b/bindings/matrix-sdk-crypto-ffi/src/machine.rs
@@ -1534,6 +1534,17 @@ impl OlmMachine {
         }
         .into()
     }
+
+    /// Clear any in-memory caches because they may be out of sync with the
+    /// underlying data store.
+    ///
+    /// The crypto store layer is caching olm sessions for a given device.
+    /// When used in a multi-process context this cache will get outdated.
+    /// If the machine is used by another process, the cache must be
+    /// invalidating when the main process is resumed.
+    pub async fn clear_crypto_cache(&self) {
+        self.inner.clear_crypto_cache().await
+    }
 }
 
 impl OlmMachine {
diff --git a/crates/matrix-sdk-crypto/CHANGELOG.md b/crates/matrix-sdk-crypto/CHANGELOG.md
index 24d59af2e8b..aa26987f66b 100644
--- a/crates/matrix-sdk-crypto/CHANGELOG.md
+++ b/crates/matrix-sdk-crypto/CHANGELOG.md
@@ -50,6 +50,10 @@ Deprecations:
 
 Additions:
 
+
+- Expose new method `OlmMachine::clear_crypto_cache()`, with FFI bindings
+  ([#3462](https://github.com/matrix-org/matrix-rust-sdk/pull/3462))
+
 - Expose new method `OlmMachine::upload_device_keys()`.
   ([#3457](https://github.com/matrix-org/matrix-rust-sdk/pull/3457))
 
diff --git a/crates/matrix-sdk-crypto/src/machine.rs b/crates/matrix-sdk-crypto/src/machine.rs
index 02180c307f7..9fecf91ca6a 100644
--- a/crates/matrix-sdk-crypto/src/machine.rs
+++ b/crates/matrix-sdk-crypto/src/machine.rs
@@ -2150,6 +2150,13 @@ impl OlmMachine {
         let account = cache.account().await?;
         Ok(account.uploaded_key_count())
     }
+
+    /// Clear any in-memory caches because they may be out of sync with the
+    /// underlying data store.
+    pub async fn clear_crypto_cache(&self) {
+        let crypto_store = self.store().crypto_store();
+        crypto_store.as_ref().clear_caches().await;
+    }
 }
 
 /// A set of requests to be executed when bootstrapping cross-signing using