diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 86d7254a53..47ef3dc88c 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -10,7 +10,7 @@ env:
   CARGO_TERM_COLOR: always
   RUSTFLAGS: -Dwarnings
   RUST_BACKTRACE: full
-  rust_min: 1.65.0 # <- Update this when bumping up MSRV
+  rust_min: 1.66.0 # <- Update this when bumping up MSRV
 
 jobs:
   build:
diff --git a/README.md b/README.md
index c9682925bb..a6d2f27bf1 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
 # ScyllaDB Rust Driver
 
 [![Crates.io](https://img.shields.io/crates/v/scylla.svg)](https://crates.io/crates/scylla) [![docs.rs](https://docs.rs/scylla/badge.svg)](https://docs.rs/scylla)
-[![minimum rustc version](https://img.shields.io/badge/rustc-1.65-orange.svg)](https://crates.io/crates/scylla)
+[![minimum rustc version](https://img.shields.io/badge/rustc-1.66-orange.svg)](https://crates.io/crates/scylla)
 
 This is a client-side driver for [ScyllaDB] written in pure Rust with a fully async API using [Tokio].
 Although optimized for ScyllaDB, the driver is also compatible with [Apache Cassandra®].
@@ -65,7 +65,7 @@ Ongoing efforts:
 Please join the `#rust-driver` channel on [ScyllaDB Slack] to discuss any issues or questions you might have.
 
 ## Supported Rust Versions
-Our driver's minimum supported Rust version (MSRV) is 1.65.0. Any changes will be explicitly published and will only happen during major releases.
+Our driver's minimum supported Rust version (MSRV) is 1.66.0. Any changes will be explicitly published and will only happen during major releases.
 
 ## Reference Documentation
 
diff --git a/scylla/src/transport/iterator.rs b/scylla/src/transport/iterator.rs
index a9f5a7ec5b..e9389992ed 100644
--- a/scylla/src/transport/iterator.rs
+++ b/scylla/src/transport/iterator.rs
@@ -38,7 +38,6 @@ use crate::transport::load_balancing::{self, RoutingInfo};
 use crate::transport::metrics::Metrics;
 use crate::transport::retry_policy::{QueryInfo, RetryDecision, RetrySession};
 use crate::transport::{Node, NodeRef};
-use crate::utils::unzip_option;
 use tracing::{trace, trace_span, warn, Instrument};
 use uuid::Uuid;
 
@@ -246,7 +245,7 @@ impl RowIterator {
                     prepared_ref.get_partitioner_name(),
                     values_ref,
                 ) {
-                Ok(res) => unzip_option(res),
+                Ok(res) => res.unzip(),
                 Err(err) => {
                     let (proof, _res) = ProvingSender::from(sender).send(Err(err)).await;
                     return proof;
diff --git a/scylla/src/transport/session.rs b/scylla/src/transport/session.rs
index 790f840400..35ff25475f 100644
--- a/scylla/src/transport/session.rs
+++ b/scylla/src/transport/session.rs
@@ -7,7 +7,6 @@ use crate::cloud::CloudConfig;
 use crate::history;
 use crate::history::HistoryListener;
 use crate::utils::pretty::{CommaSeparatedDisplayer, CqlValueDisplayer};
-use crate::utils::unzip_option;
 use arc_swap::ArcSwapOption;
 use async_trait::async_trait;
 use bytes::Bytes;
@@ -937,11 +936,12 @@ impl Session {
         let values_ref = &serialized_values;
         let paging_state_ref = &paging_state;
 
-        let (partition_key, token) =
-            unzip_option(prepared.extract_partition_key_and_calculate_token(
+        let (partition_key, token) = prepared
+            .extract_partition_key_and_calculate_token(
                 prepared.get_partitioner_name(),
                 &serialized_values,
-            )?);
+            )?
+            .unzip();
 
         let execution_profile = prepared
             .get_execution_profile_handle()
diff --git a/scylla/src/utils/mod.rs b/scylla/src/utils/mod.rs
index 9399e33266..c83adbf7e7 100644
--- a/scylla/src/utils/mod.rs
+++ b/scylla/src/utils/mod.rs
@@ -2,11 +2,3 @@ pub(crate) mod parse;
 
 pub(crate) mod pretty;
 pub mod test_utils;
-
-// FIXME: replace this with `Option::unzip()` once MSRV is bumped to at least 1.66
-pub(crate) fn unzip_option<T, U>(opt: Option<(T, U)>) -> (Option<T>, Option<U>) {
-    match opt {
-        Some((a, b)) => (Some(a), Some(b)),
-        None => (None, None),
-    }
-}