diff --git a/src/blob/mod.rs b/src/blob/mod.rs
index 7b89647..2b13e1d 100644
--- a/src/blob/mod.rs
+++ b/src/blob/mod.rs
@@ -223,7 +223,7 @@ impl Connection {
         row_id: i64,
         read_only: bool,
     ) -> Result<Blob<'a>> {
-        let mut c = self.db.borrow_mut();
+        let c = self.db.borrow_mut();
         let mut blob = ptr::null_mut();
         let db = db.as_cstring()?;
         let table = super::str_to_cstring(table)?;
diff --git a/src/busy.rs b/src/busy.rs
index e51fb08..b394d01 100644
--- a/src/busy.rs
+++ b/src/busy.rs
@@ -64,7 +64,7 @@ impl Connection {
                 0
             }
         }
-        let mut c = self.db.borrow_mut();
+        let c = self.db.borrow_mut();
         let r = match callback {
             Some(f) => unsafe {
                 ffi::sqlite3_busy_handler(c.db(), Some(busy_handler_callback), f as *mut c_void)
diff --git a/src/hooks.rs b/src/hooks.rs
index 943e1ea..1c9dbdf 100644
--- a/src/hooks.rs
+++ b/src/hooks.rs
@@ -14,7 +14,6 @@ use crate::{Connection, InnerConnection};
 #[repr(i32)]
 #[non_exhaustive]
 #[allow(clippy::upper_case_acronyms)]
-#[cfg_attr(docsrs, doc(cfg(feature = "hooks")))]
 pub enum Action {
     /// Unsupported / unexpected action
     UNKNOWN = -1,
@@ -43,14 +42,14 @@ impl From<i32> for Action {
 /// See <https://sqlite.org/c3ref/set_authorizer.html> for more info.
 #[derive(Clone, Copy, Debug, PartialEq)]
 pub struct AuthContext<'c> {
-    // The action to be authorized.
+    /// The action to be authorized.
     pub action: AuthAction<'c>,
 
     /// The database name, if applicable.
     pub database_name: Option<&'c str>,
 
-    // The inner-most trigger or view responsible for the access attempt.
-    // `None` if the access attempt was made by top-level SQL code.
+    /// The inner-most trigger or view responsible for the access attempt.
+    /// `None` if the access attempt was made by top-level SQL code.
     pub accessor: Option<&'c str>,
 }
 
@@ -299,6 +298,7 @@ pub(crate) type BoxedAuthorizer =
 /// A transaction operation.
 #[derive(Clone, Copy, Debug, PartialEq)]
 #[non_exhaustive]
+#[allow(missing_docs)]
 pub enum TransactionOperation {
     Unknown,
     Begin,
@@ -317,6 +317,7 @@ impl TransactionOperation {
     }
 }
 
+/// [`authorizer`](Connection::authorizer) return code
 #[derive(Clone, Copy, Debug, PartialEq)]
 #[non_exhaustive]
 pub enum Authorization {
@@ -598,7 +599,7 @@ impl InnerConnection {
         };
     }
 
-    pub fn authorizer<'c, F>(&'c mut self, authorizer: Option<F>)
+    fn authorizer<'c, F>(&'c mut self, authorizer: Option<F>)
     where
         F: for<'r> FnMut(AuthContext<'r>) -> Authorization + Send + RefUnwindSafe + 'static,
     {
diff --git a/src/inner_connection.rs b/src/inner_connection.rs
index 11dc524..1bd641c 100644
--- a/src/inner_connection.rs
+++ b/src/inner_connection.rs
@@ -136,7 +136,7 @@ impl InnerConnection {
     }
 
     #[inline]
-    pub fn decode_result(&mut self, code: c_int) -> Result<()> {
+    pub fn decode_result(&self, code: c_int) -> Result<()> {
         unsafe { InnerConnection::decode_result_raw(self.db(), code) }
     }
 
@@ -278,7 +278,7 @@ impl InnerConnection {
     }
 
     #[inline]
-    pub fn changes(&mut self) -> usize {
+    pub fn changes(&self) -> usize {
         unsafe { ffi::sqlite3_changes(self.db()) as usize }
     }
 
diff --git a/src/lib.rs b/src/lib.rs
index 18e2723..f82f9e4 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -74,8 +74,6 @@ pub use crate::cache::CachedStatement;
 pub use crate::column::Column;
 pub use crate::error::Error;
 pub use crate::ffi::ErrorCode;
-#[cfg(feature = "hooks")]
-pub use crate::hooks::Action;
 #[cfg(feature = "load_extension")]
 pub use crate::load_extension_guard::LoadExtensionGuard;
 pub use crate::params::{params_from_iter, Params, ParamsFromIter};
@@ -108,7 +106,7 @@ mod context;
 pub mod functions;
 #[cfg(feature = "hooks")]
 #[cfg_attr(docsrs, doc(cfg(feature = "hooks")))]
-mod hooks;
+pub mod hooks;
 mod inner_connection;
 #[cfg(feature = "limits")]
 #[cfg_attr(docsrs, doc(cfg(feature = "limits")))]
@@ -845,7 +843,7 @@ impl Connection {
 
     #[inline]
     fn decode_result(&self, code: c_int) -> Result<()> {
-        self.db.borrow_mut().decode_result(code)
+        self.db.borrow().decode_result(code)
     }
 
     /// Return the number of rows modified, inserted or deleted by the most
@@ -853,7 +851,7 @@ impl Connection {
     /// connection.
     #[inline]
     fn changes(&self) -> usize {
-        self.db.borrow_mut().changes()
+        self.db.borrow().changes()
     }
 
     /// Test for auto-commit mode.