diff --git a/Cargo.toml b/Cargo.toml
index 5834706..2637f7c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -112,7 +112,7 @@ bundled-full = ["modern-full", "bundled"]
 
 [dependencies]
 time = { version = "0.3.0", features = ["formatting", "macros", "parsing"], optional = true }
-bitflags = "1.2"
+bitflags = "2.0"
 hashlink = "0.8"
 chrono = { version = "0.4", optional = true, default-features = false, features = ["clock"] }
 serde_json = { version = "1.0", optional = true }
diff --git a/src/inner_connection.rs b/src/inner_connection.rs
index 18ce3db..275e846 100644
--- a/src/inner_connection.rs
+++ b/src/inner_connection.rs
@@ -69,13 +69,13 @@ impl InnerConnection {
 
         // Replicate the check for sane open flags from SQLite, because the check in
         // SQLite itself wasn't added until version 3.7.3.
-        debug_assert_eq!(1 << OpenFlags::SQLITE_OPEN_READ_ONLY.bits, 0x02);
-        debug_assert_eq!(1 << OpenFlags::SQLITE_OPEN_READ_WRITE.bits, 0x04);
+        debug_assert_eq!(1 << OpenFlags::SQLITE_OPEN_READ_ONLY.bits(), 0x02);
+        debug_assert_eq!(1 << OpenFlags::SQLITE_OPEN_READ_WRITE.bits(), 0x04);
         debug_assert_eq!(
-            1 << (OpenFlags::SQLITE_OPEN_READ_WRITE | OpenFlags::SQLITE_OPEN_CREATE).bits,
+            1 << (OpenFlags::SQLITE_OPEN_READ_WRITE | OpenFlags::SQLITE_OPEN_CREATE).bits(),
             0x40
         );
-        if (1 << (flags.bits & 0x7)) & 0x46 == 0 {
+        if (1 << (flags.bits() & 0x7)) & 0x46 == 0 {
             return Err(Error::SqliteFailure(
                 ffi::Error::new(ffi::SQLITE_MISUSE),
                 None,
diff --git a/src/lib.rs b/src/lib.rs
index b0c42f4..1d982f6 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1029,6 +1029,7 @@ bitflags::bitflags! {
     /// The default open flags are `SQLITE_OPEN_READ_WRITE | SQLITE_OPEN_CREATE
     /// | SQLITE_OPEN_URI | SQLITE_OPEN_NO_MUTEX`. See [`Connection::open`] for
     /// some discussion about these flags.
+    #[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
     #[repr(C)]
     pub struct OpenFlags: ::std::os::raw::c_int {
         /// The database is opened in read-only mode.
diff --git a/src/vtab/series.rs b/src/vtab/series.rs
index bb2a86f..4b1993e 100644
--- a/src/vtab/series.rs
+++ b/src/vtab/series.rs
@@ -28,6 +28,7 @@ const SERIES_COLUMN_STOP: c_int = 2;
 const SERIES_COLUMN_STEP: c_int = 3;
 
 bitflags::bitflags! {
+    #[derive(Clone, Copy)]
     #[repr(C)]
     struct QueryPlanFlags: ::std::os::raw::c_int {
         // start = $value  -- constraint exists
@@ -41,7 +42,7 @@ bitflags::bitflags! {
         // output in ascending order
         const ASC  = 16;
         // Both start and stop
-        const BOTH  = QueryPlanFlags::START.bits | QueryPlanFlags::STOP.bits;
+        const BOTH  = QueryPlanFlags::START.bits() | QueryPlanFlags::STOP.bits();
     }
 }