diff --git a/Cargo.toml b/Cargo.toml
index 7ad0c51245d..782a7625064 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -125,7 +125,7 @@ cfg-if = "1.0.4"
 either = "1.15.0"
 sys-locale = "0.3.2"
 timezone_provider = { version = "0.1.0" }
-temporal_rs = { version = "0.1.0", default-features = false }
+temporal_rs = { version = "0.1.1", default-features = false }
 web-time = "1.1.0"
 criterion = "0.7.0"
 float-cmp = "0.10.0"
diff --git a/core/engine/src/builtins/temporal/duration/mod.rs b/core/engine/src/builtins/temporal/duration/mod.rs
index 5dc8f76c9ac..fad6b6515ba 100644
--- a/core/engine/src/builtins/temporal/duration/mod.rs
+++ b/core/engine/src/builtins/temporal/duration/mod.rs
@@ -616,7 +616,10 @@ impl Duration {
         // 4. Let relativeToRecord be ? GetTemporalRelativeToOption(resolvedOptions).
         let relative_to = get_relative_to_option(&options, context)?;
 
-        Ok((one.compare_with_provider(&two, relative_to, context.tz_provider())? as i8).into())
+        Ok(
+            (one.compare_with_provider(&two, relative_to, context.timezone_provider())? as i8)
+                .into(),
+        )
     }
 }
 
@@ -962,10 +965,11 @@ impl Duration {
         // NOTE: execute step 21 earlier before initial values are shadowed.
         // 21. If smallestUnitPresent is false and largestUnitPresent is false, then
 
-        let rounded_duration =
-            duration
-                .inner
-                .round_with_provider(options, relative_to, context.tz_provider())?;
+        let rounded_duration = duration.inner.round_with_provider(
+            options,
+            relative_to,
+            context.timezone_provider(),
+        )?;
         create_temporal_duration(rounded_duration, None, context).map(Into::into)
     }
 
@@ -1042,7 +1046,7 @@ impl Duration {
 
         Ok(duration
             .inner
-            .total_with_provider(unit, relative_to, context.tz_provider())?
+            .total_with_provider(unit, relative_to, context.timezone_provider())?
             .as_inner()
             .into())
     }
diff --git a/core/engine/src/builtins/temporal/instant/mod.rs b/core/engine/src/builtins/temporal/instant/mod.rs
index 7fc49579733..736fe88cc88 100644
--- a/core/engine/src/builtins/temporal/instant/mod.rs
+++ b/core/engine/src/builtins/temporal/instant/mod.rs
@@ -649,7 +649,7 @@ impl Instant {
         let ixdtf = instant.inner.to_ixdtf_string_with_provider(
             timezone,
             options,
-            context.tz_provider(),
+            context.timezone_provider(),
         )?;
 
         Ok(JsString::from(ixdtf).into())
@@ -678,7 +678,7 @@ impl Instant {
         let ixdtf = instant.inner.to_ixdtf_string_with_provider(
             None,
             ToStringRoundingOptions::default(),
-            context.tz_provider(),
+            context.timezone_provider(),
         )?;
         Ok(JsString::from(ixdtf).into())
     }
@@ -705,7 +705,7 @@ impl Instant {
         let ixdtf = instant.inner.to_ixdtf_string_with_provider(
             None,
             ToStringRoundingOptions::default(),
-            context.tz_provider(),
+            context.timezone_provider(),
         )?;
         Ok(JsString::from(ixdtf).into())
     }
@@ -758,7 +758,7 @@ impl Instant {
         // 4. Return ! CreateTemporalZonedDateTime(instant.[[EpochNanoseconds]], timeZone, "iso8601").
         let zdt = instant
             .inner
-            .to_zoned_date_time_iso_with_provider(timezone, context.tz_provider())?;
+            .to_zoned_date_time_iso_with_provider(timezone, context.timezone_provider())?;
         create_temporal_zoneddatetime(zdt, None, context).map(Into::into)
     }
 }
diff --git a/core/engine/src/builtins/temporal/mod.rs b/core/engine/src/builtins/temporal/mod.rs
index 698f62cda65..7ae6451d484 100644
--- a/core/engine/src/builtins/temporal/mod.rs
+++ b/core/engine/src/builtins/temporal/mod.rs
@@ -224,7 +224,7 @@ pub(crate) fn get_relative_to_option(
             None,
             None,
             None,
-            context.tz_provider(),
+            context.timezone_provider(),
         )?;
         return Ok(Some(RelativeTo::ZonedDateTime(zdt)));
     }
@@ -238,7 +238,7 @@ pub(crate) fn get_relative_to_option(
     // Steps 7-12 are handled by temporal_rs
     Ok(Some(RelativeTo::try_from_str_with_provider(
         &relative_to_str.to_std_string_escaped(),
-        context.tz_provider(),
+        context.timezone_provider(),
     )?))
 }
 
diff --git a/core/engine/src/builtins/temporal/now.rs b/core/engine/src/builtins/temporal/now.rs
index b9ac9015171..5fd881e8981 100644
--- a/core/engine/src/builtins/temporal/now.rs
+++ b/core/engine/src/builtins/temporal/now.rs
@@ -81,8 +81,8 @@ impl Now {
         // TODO: this should be optimized once system time zone is in context
         // 1. Return ! SystemTimeZone().
         let context: &Context = context;
-        let time_zone = context.get_system_time_zone(context.tz_provider())?;
-        Ok(JsString::from(time_zone.identifier_with_provider(context.tz_provider())?).into())
+        let time_zone = context.get_system_time_zone(context.timezone_provider())?;
+        Ok(JsString::from(time_zone.identifier_with_provider(context.timezone_provider())?).into())
     }
 
     /// 2.2.2 `Temporal.Now.instant()`
@@ -125,7 +125,8 @@ impl Now {
 
         let now: InnerNow<&Context> = InnerNow::new(context);
 
-        let datetime = now.plain_date_time_iso_with_provider(time_zone, context.tz_provider())?;
+        let datetime =
+            now.plain_date_time_iso_with_provider(time_zone, context.timezone_provider())?;
         create_temporal_datetime(datetime, None, context).map(Into::into)
     }
 
@@ -152,7 +153,7 @@ impl Now {
             .transpose()?;
 
         let now: InnerNow<&Context> = InnerNow::new(context);
-        let zdt = now.zoned_date_time_iso_with_provider(time_zone, context.tz_provider())?;
+        let zdt = now.zoned_date_time_iso_with_provider(time_zone, context.timezone_provider())?;
         create_temporal_zoneddatetime(zdt, None, context).map(Into::into)
     }
 
@@ -176,7 +177,7 @@ impl Now {
 
         let now: InnerNow<&Context> = InnerNow::new(context);
 
-        let pd = now.plain_date_iso_with_provider(time_zone, context.tz_provider())?;
+        let pd = now.plain_date_iso_with_provider(time_zone, context.timezone_provider())?;
         create_temporal_date(pd, None, context).map(Into::into)
     }
 
@@ -200,7 +201,7 @@ impl Now {
 
         let now: InnerNow<&Context> = InnerNow::new(context);
 
-        let pt = now.plain_time_with_provider(time_zone, context.tz_provider())?;
+        let pt = now.plain_time_with_provider(time_zone, context.timezone_provider())?;
         create_temporal_time(pt, None, context).map(Into::into)
     }
 }
diff --git a/core/engine/src/builtins/temporal/plain_date/mod.rs b/core/engine/src/builtins/temporal/plain_date/mod.rs
index 46006d0466c..e3a220ca78e 100644
--- a/core/engine/src/builtins/temporal/plain_date/mod.rs
+++ b/core/engine/src/builtins/temporal/plain_date/mod.rs
@@ -1174,9 +1174,11 @@ impl PlainDate {
             (to_temporal_timezone_identifier(item, context)?, None)
         };
 
-        let result =
-            date.inner
-                .to_zoned_date_time_with_provider(timezone, time, context.tz_provider())?;
+        let result = date.inner.to_zoned_date_time_with_provider(
+            timezone,
+            time,
+            context.timezone_provider(),
+        )?;
 
         // 7. Return ! CreateTemporalZonedDateTime(epochNs, timeZone, temporalDate.[[Calendar]]).
         create_temporal_zoneddatetime(result, None, context).map(Into::into)
diff --git a/core/engine/src/builtins/temporal/plain_date_time/mod.rs b/core/engine/src/builtins/temporal/plain_date_time/mod.rs
index 5d949749652..9a7bc594742 100644
--- a/core/engine/src/builtins/temporal/plain_date_time/mod.rs
+++ b/core/engine/src/builtins/temporal/plain_date_time/mod.rs
@@ -1553,7 +1553,7 @@ impl PlainDateTime {
         let result = dt.inner.to_zoned_date_time_with_provider(
             timezone,
             disambiguation,
-            context.tz_provider(),
+            context.timezone_provider(),
         )?;
         create_temporal_zoneddatetime(result, None, context).map(Into::into)
     }
diff --git a/core/engine/src/builtins/temporal/zoneddatetime/mod.rs b/core/engine/src/builtins/temporal/zoneddatetime/mod.rs
index 6f0eaf524f0..f5c707408c7 100644
--- a/core/engine/src/builtins/temporal/zoneddatetime/mod.rs
+++ b/core/engine/src/builtins/temporal/zoneddatetime/mod.rs
@@ -431,7 +431,7 @@ impl BuiltInConstructor for ZonedDateTime {
         // a. Set timeZone to FormatOffsetTimeZoneIdentifier(timeZoneParse.[[OffsetMinutes]]).
         let timezone = TimeZone::try_from_identifier_str_with_provider(
             &timezone_str.to_std_string_escaped(),
-            context.tz_provider(),
+            context.timezone_provider(),
         )?;
 
         //  8. If calendar is undefined, set calendar to "iso8601".
@@ -454,7 +454,7 @@ impl BuiltInConstructor for ZonedDateTime {
             epoch_nanos.to_i128(),
             timezone,
             calendar,
-            context.tz_provider(),
+            context.timezone_provider(),
         )?;
 
         //  11. Return ? CreateTemporalZonedDateTime(epochNanoseconds, timeZone, calendar, NewTarget).
@@ -511,7 +511,7 @@ impl ZonedDateTime {
         Ok(JsString::from(
             zdt.inner
                 .time_zone()
-                .identifier_with_provider(context.tz_provider())?,
+                .identifier_with_provider(context.timezone_provider())?,
         )
         .into())
     }
@@ -955,7 +955,7 @@ impl ZonedDateTime {
 
         Ok(zdt
             .inner
-            .hours_in_day_with_provider(context.tz_provider())?
+            .hours_in_day_with_provider(context.timezone_provider())?
             .into())
     }
 
@@ -1228,7 +1228,7 @@ impl ZonedDateTime {
             disambiguation,
             offset,
             overflow,
-            context.tz_provider(),
+            context.timezone_provider(),
         )?;
         create_temporal_zoneddatetime(result, None, context).map(Into::into)
     }
@@ -1264,7 +1264,7 @@ impl ZonedDateTime {
 
         let inner = zdt
             .inner
-            .with_plain_time_and_provider(time, context.tz_provider())?;
+            .with_plain_time_and_provider(time, context.timezone_provider())?;
         create_temporal_zoneddatetime(inner, None, context).map(Into::into)
     }
 
@@ -1292,7 +1292,7 @@ impl ZonedDateTime {
 
         let inner = zdt
             .inner
-            .with_time_zone_with_provider(timezone, context.tz_provider())?;
+            .with_time_zone_with_provider(timezone, context.timezone_provider())?;
         create_temporal_zoneddatetime(inner, None, context).map(Into::into)
     }
 
@@ -1347,9 +1347,9 @@ impl ZonedDateTime {
         let options = get_options_object(args.get_or_undefined(1))?;
         let overflow = get_option::<Overflow>(&options, js_string!("overflow"), context)?;
 
-        let result = zdt
-            .inner
-            .add_with_provider(&duration, overflow, context.tz_provider())?;
+        let result =
+            zdt.inner
+                .add_with_provider(&duration, overflow, context.timezone_provider())?;
         create_temporal_zoneddatetime(result, None, context).map(Into::into)
     }
 
@@ -1380,7 +1380,7 @@ impl ZonedDateTime {
 
         let result =
             zdt.inner
-                .subtract_with_provider(&duration, overflow, context.tz_provider())?;
+                .subtract_with_provider(&duration, overflow, context.timezone_provider())?;
         create_temporal_zoneddatetime(result, None, context).map(Into::into)
     }
 
@@ -1409,9 +1409,9 @@ impl ZonedDateTime {
         let options = get_options_object(args.get_or_undefined(1))?;
         let settings = get_difference_settings(&options, context)?;
 
-        let result = zdt
-            .inner
-            .until_with_provider(&other, settings, context.tz_provider())?;
+        let result =
+            zdt.inner
+                .until_with_provider(&other, settings, context.timezone_provider())?;
         create_temporal_duration(result, None, context).map(Into::into)
     }
 
@@ -1440,9 +1440,9 @@ impl ZonedDateTime {
         let options = get_options_object(args.get_or_undefined(1))?;
         let settings = get_difference_settings(&options, context)?;
 
-        let result = zdt
-            .inner
-            .since_with_provider(&other, settings, context.tz_provider())?;
+        let result =
+            zdt.inner
+                .since_with_provider(&other, settings, context.timezone_provider())?;
         create_temporal_duration(result, None, context).map(Into::into)
     }
 
@@ -1521,7 +1521,7 @@ impl ZonedDateTime {
 
         let result = zdt
             .inner
-            .round_with_provider(options, context.tz_provider())?;
+            .round_with_provider(options, context.timezone_provider())?;
         create_temporal_zoneddatetime(result, None, context).map(Into::into)
     }
 
@@ -1548,7 +1548,7 @@ impl ZonedDateTime {
         let other = to_temporal_zoneddatetime(args.get_or_undefined(0), None, context)?;
         Ok(zdt
             .inner
-            .equals_with_provider(&other, context.tz_provider())?
+            .equals_with_provider(&other, context.timezone_provider())?
             .into())
     }
 
@@ -1598,7 +1598,7 @@ impl ZonedDateTime {
             display_timezone,
             show_calendar,
             options,
-            context.tz_provider(),
+            context.timezone_provider(),
         )?;
 
         Ok(JsString::from(ixdtf).into())
@@ -1628,7 +1628,7 @@ impl ZonedDateTime {
             DisplayTimeZone::Auto,
             DisplayCalendar::Auto,
             ToStringRoundingOptions::default(),
-            context.tz_provider(),
+            context.timezone_provider(),
         )?;
 
         Ok(JsString::from(ixdtf).into())
@@ -1657,7 +1657,7 @@ impl ZonedDateTime {
             DisplayTimeZone::Auto,
             DisplayCalendar::Auto,
             ToStringRoundingOptions::default(),
-            context.tz_provider(),
+            context.timezone_provider(),
         )?;
 
         Ok(JsString::from(ixdtf).into())
@@ -1700,7 +1700,7 @@ impl ZonedDateTime {
 
         let new = zdt
             .inner
-            .start_of_day_with_provider(context.tz_provider())?;
+            .start_of_day_with_provider(context.timezone_provider())?;
         create_temporal_zoneddatetime(new, None, context).map(Into::into)
     }
 
@@ -1767,7 +1767,7 @@ impl ZonedDateTime {
         // Step 8-12
         let result = zdt
             .inner
-            .get_time_zone_transition_with_provider(direction, context.tz_provider())?;
+            .get_time_zone_transition_with_provider(direction, context.timezone_provider())?;
 
         match result {
             Some(zdt) => create_temporal_zoneddatetime(zdt, None, context).map(Into::into),
@@ -1964,7 +1964,7 @@ pub(crate) fn to_temporal_zoneddatetime(
                 overflow,
                 disambiguation,
                 offset_option,
-                context.tz_provider(),
+                context.timezone_provider(),
             )?)
         }
         JsVariant::String(zdt_source) => {
@@ -2003,7 +2003,7 @@ pub(crate) fn to_temporal_zoneddatetime(
                 zdt_source.to_std_string_escaped().as_bytes(),
                 disambiguation,
                 offset_option,
-                context.tz_provider(),
+                context.timezone_provider(),
             )?)
         }
         // 5. Else,
@@ -2044,7 +2044,7 @@ pub(crate) fn to_temporal_timezone_identifier(
     // 9. Return timeZoneIdentifierRecord.[[Identifier]].
     let timezone = TimeZone::try_from_str_with_provider(
         &tz_string.to_std_string_escaped(),
-        context.tz_provider(),
+        context.timezone_provider(),
     )?;
 
     Ok(timezone)
diff --git a/core/engine/src/context/mod.rs b/core/engine/src/context/mod.rs
index db8de29600a..19294ac3b49 100644
--- a/core/engine/src/context/mod.rs
+++ b/core/engine/src/context/mod.rs
@@ -108,7 +108,7 @@ pub struct Context {
     can_block: bool,
 
     #[cfg(feature = "temporal")]
-    tz_provider: CompiledTzdbProvider,
+    timezone_provider: Box<dyn TimeZoneProvider>,
 
     /// Intl data provider.
     #[cfg(feature = "intl")]
@@ -149,6 +149,10 @@ impl std::fmt::Debug for Context {
         #[cfg(feature = "intl")]
         debug.field("intl_provider", &self.intl_provider);
 
+        // TODO: Support TimeZoneProvider debug names
+        #[cfg(feature = "temporal")]
+        debug.field("timezone_provider", &"TimeZoneProvider");
+
         debug.finish_non_exhaustive()
     }
 }
@@ -893,8 +897,8 @@ impl Context {
 
     /// Get the Time Zone Provider
     #[cfg(feature = "temporal")]
-    pub(crate) fn tz_provider(&self) -> &impl TimeZoneProvider {
-        &self.tz_provider
+    pub(crate) fn timezone_provider(&self) -> &dyn TimeZoneProvider {
+        self.timezone_provider.as_ref()
     }
 }
 
@@ -912,6 +916,8 @@ pub struct ContextBuilder {
     can_block: bool,
     #[cfg(feature = "intl")]
     icu: Option<icu::IntlProvider>,
+    #[cfg(feature = "temporal")]
+    timezone_provider: Option<Box<dyn TimeZoneProvider>>,
     #[cfg(feature = "fuzz")]
     instructions_remaining: usize,
 }
@@ -945,6 +951,12 @@ impl std::fmt::Debug for ContextBuilder {
         #[cfg(feature = "intl")]
         out.field("icu", &self.icu);
 
+        #[cfg(feature = "temporal")]
+        out.field(
+            "timezone_provider",
+            &self.timezone_provider.as_ref().map(|_| "TimeZoneProvider"),
+        );
+
         #[cfg(feature = "fuzz")]
         out.field("instructions_remaining", &self.instructions_remaining);
 
@@ -1005,6 +1017,21 @@ impl ContextBuilder {
         Ok(self)
     }
 
+    /// Set the [`timezone_provider::provider::TimeZoneProvider`] that should be used to source
+    /// time zone data.
+    ///
+    /// ## Default
+    ///
+    /// If no time zone provider is provided, a compiled time zone provider will be used
+    /// which includes the time zone data in the binary. This may increase binary sizes
+    /// by up to 200 Kb.
+    #[cfg(feature = "temporal")]
+    #[must_use]
+    pub fn timezone_provider<T: TimeZoneProvider + 'static>(mut self, provider: T) -> Self {
+        self.timezone_provider = Some(Box::new(provider));
+        self
+    }
+
     /// Initializes the [`HostHooks`] for the context.
     ///
     /// [`Host Hooks`]: https://tc39.es/ecma262/#sec-host-hooks-summary
@@ -1104,7 +1131,11 @@ impl ContextBuilder {
             vm,
             strict: false,
             #[cfg(feature = "temporal")]
-            tz_provider: CompiledTzdbProvider::default(),
+            timezone_provider: if let Some(provider) = self.timezone_provider {
+                provider
+            } else {
+                Box::new(CompiledTzdbProvider::default())
+            },
             #[cfg(feature = "intl")]
             intl_provider: if let Some(icu) = self.icu {
                 icu