diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index db616cb..425e278 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -31,7 +31,11 @@ jobs:
       run: cargo clippy --features client,camera
     - name: Build client+telescope
       run: cargo clippy --features client,telescope
+    - name: Build client+focuser
+      run: cargo clippy --features client,focuser
     - name: Build server+camera
       run: cargo clippy --features server,camera
     - name: Build server+telescope
       run: cargo clippy --features server,telescope
+    - name: Build server+focuser
+      run: cargo clippy --features server,focuser
diff --git a/Cargo.toml b/Cargo.toml
index e93946a..a7cbcf4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -13,7 +13,7 @@ license = "MIT OR Apache-2.0"
 async-fn-stream = "0.2.2"
 async-trait = "0.1.81"
 axum = { version = "0.7.5", optional = true }
-bytemuck = { version = "1.17.0", features = ["derive", "extern_crate_std"], optional = true }
+bytemuck = { version = "1.17.0", features = ["derive", "extern_crate_std"] }
 bytes = { version = "1.7.1", optional = true }
 custom_debug = "0.6.1"
 default-net = "0.22.0"
@@ -38,7 +38,7 @@ serde_plain = "1.0.2"
 serde_repr = "0.1.19"
 socket2 = "0.5.7"
 thiserror = "1.0.63"
-time = { version = "0.3.36", features = ["formatting", "parsing"] }
+time = { version = "0.3.36", features = ["formatting", "parsing"], optional = true }
 tokio = { version = "1.39.3", features = ["net", "rt", "io-util"] }
 tracing = "0.1.40"
 tracing-futures = { version = "0.2.5", features = ["futures-03"] }
@@ -54,11 +54,9 @@ ctor = "0.2.8"
 eframe = "0.28.1"
 # apparently Cargo doesn't allow `test` to enable `ndarray/rayon` when `ndarray` is an optional dependency
 # hence the duplicate dep with rayon feature
-ndarray = { version = "0.16.1", features = ["rayon"] }
 nokhwa = { version = "0.10.4", features = ["input-native", "output-threaded"] }
 parking_lot = { version = "0.12.3", features = ["arc_lock", "send_guard"] }
 serial_test = "3.1.1"
-time = { version = "0.3.36", features = ["formatting"] }
 tracing-subscriber = "0.3.18"
 tracing-error = "0.2.0"
 color-eyre = "0.6.3"
@@ -71,7 +69,7 @@ harness = false
 [features]
 all-devices = ["camera", "covercalibrator", "dome", "filterwheel", "focuser", "observingconditions", "rotator", "safetymonitor", "switch", "telescope"]
 
-camera = ["dep:mediatype", "dep:bytemuck", "dep:ndarray", "dep:serde-ndim"]
+camera = ["dep:mediatype", "dep:ndarray", "dep:serde-ndim", "dep:time"]
 covercalibrator = []
 dome = []
 filterwheel = []
@@ -80,12 +78,12 @@ observingconditions = []
 rotator = []
 safetymonitor = []
 switch = []
-telescope = []
+telescope = ["dep:time"]
 
-client = ["dep:reqwest", "dep:bytes", "dep:mime", "dep:rand", "dep:once_cell"]
-server = ["dep:axum", "dep:sailfish", "tokio/macros"]
+client = ["dep:reqwest", "dep:bytes", "dep:mime", "dep:rand", "dep:once_cell", "time/parsing"]
+server = ["dep:axum", "dep:sailfish", "tokio/macros", "time/formatting"]
 
-test = ["client", "server", "camera", "tokio/macros", "tokio/rt-multi-thread"]
+test = ["client", "server", "camera", "tokio/macros", "tokio/rt-multi-thread", "ndarray/rayon"]
 
 nightly = []
 
diff --git a/src/api/autogen/index.ts b/src/api/autogen/index.ts
index 3ce571c..eecd6f8 100644
--- a/src/api/autogen/index.ts
+++ b/src/api/autogen/index.ts
@@ -207,7 +207,7 @@ interface EnumType extends RegisteredTypeBase {
 
 interface DateType extends RegisteredTypeBase {
   kind: 'Date';
-  trailingZ: boolean;
+  formatName: string;
 }
 
 interface DeviceMethod {
@@ -325,7 +325,8 @@ function handleType(
             name,
             doc: getDoc(schema),
             kind: 'Date',
-            trailingZ: schema.format === 'date-time'
+            formatName:
+              schema.format === 'date-time' ? 'DATE_TIME_OFFSET' : 'DATE_TIME'
           }));
           return rusty('std::time::SystemTime', `${formatter}`);
         }
@@ -668,7 +669,6 @@ use macro_rules_attribute::apply;
 use num_enum::{IntoPrimitive, TryFromPrimitive};
 use serde::{Deserialize, Serialize};
 use serde_repr::{Deserialize_repr, Serialize_repr};
-use time::format_description::well_known::Iso8601;
 
 pub use server_info::*;
 
@@ -745,7 +745,7 @@ ${stringifyIter(types, ({ features, type }) => {
       `;
     }
     case 'Date': {
-      let format = `Iso8601::DATE_TIME${type.trailingZ ? '_OFFSET' : ''}`;
+      let format = `&time::format_description::well_known::Iso8601::${type.formatName}`;
 
       return `
         ${stringifyDoc(type.doc)}
@@ -775,7 +775,7 @@ ${stringifyIter(types, ({ features, type }) => {
           fn serialize<S: serde::Serializer>(value: &time::OffsetDateTime, serializer: S) -> Result<S::Ok, S::Error> {
             value
             .to_offset(time::UtcOffset::UTC)
-            .format(&${format})
+            .format(${format})
             .map_err(serde::ser::Error::custom)?
             .serialize(serializer)
           }
@@ -791,10 +791,8 @@ ${stringifyIter(types, ({ features, type }) => {
               }
 
               fn visit_str<E: serde::de::Error>(self, value: &str) -> Result<Self::Value, E> {
-                match time::PrimitiveDateTime::parse(value, &${format}) {
-                  Ok(time) => Ok(time.assume_utc()),
-                  Err(err) => Err(serde::de::Error::custom(err)),
-                }
+                time::OffsetDateTime::parse(value, ${format})
+                .map_err(serde::de::Error::custom)
               }
             }
 
diff --git a/src/api/mod.rs b/src/api/mod.rs
index abc8b23..f5db3d3 100644
--- a/src/api/mod.rs
+++ b/src/api/mod.rs
@@ -55,7 +55,6 @@ use macro_rules_attribute::apply;
 use num_enum::{IntoPrimitive, TryFromPrimitive};
 use serde::{Deserialize, Serialize};
 use serde_repr::{Deserialize_repr, Serialize_repr};
-use time::format_description::well_known::Iso8601;
 
 pub use server_info::*;
 
@@ -133,7 +132,7 @@ impl LastExposureStartTime {
     ) -> Result<S::Ok, S::Error> {
         value
             .to_offset(time::UtcOffset::UTC)
-            .format(&Iso8601::DATE_TIME)
+            .format(&time::format_description::well_known::Iso8601::DATE_TIME)
             .map_err(serde::ser::Error::custom)?
             .serialize(serializer)
     }
@@ -151,10 +150,11 @@ impl LastExposureStartTime {
             }
 
             fn visit_str<E: serde::de::Error>(self, value: &str) -> Result<Self::Value, E> {
-                match time::PrimitiveDateTime::parse(value, &Iso8601::DATE_TIME) {
-                    Ok(time) => Ok(time.assume_utc()),
-                    Err(err) => Err(serde::de::Error::custom(err)),
-                }
+                time::OffsetDateTime::parse(
+                    value,
+                    &time::format_description::well_known::Iso8601::DATE_TIME,
+                )
+                .map_err(serde::de::Error::custom)
             }
         }
 
@@ -478,7 +478,7 @@ impl TelescopeUtcdate {
     ) -> Result<S::Ok, S::Error> {
         value
             .to_offset(time::UtcOffset::UTC)
-            .format(&Iso8601::DATE_TIME_OFFSET)
+            .format(&time::format_description::well_known::Iso8601::DATE_TIME_OFFSET)
             .map_err(serde::ser::Error::custom)?
             .serialize(serializer)
     }
@@ -496,10 +496,11 @@ impl TelescopeUtcdate {
             }
 
             fn visit_str<E: serde::de::Error>(self, value: &str) -> Result<Self::Value, E> {
-                match time::PrimitiveDateTime::parse(value, &Iso8601::DATE_TIME_OFFSET) {
-                    Ok(time) => Ok(time.assume_utc()),
-                    Err(err) => Err(serde::de::Error::custom(err)),
-                }
+                time::OffsetDateTime::parse(
+                    value,
+                    &time::format_description::well_known::Iso8601::DATE_TIME_OFFSET,
+                )
+                .map_err(serde::de::Error::custom)
             }
         }