diff --git a/Cargo.lock b/Cargo.lock
index 0006f36..ae0544b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -28,9 +28,9 @@ dependencies = [
 
 [[package]]
 name = "anyhow"
-version = "1.0.99"
+version = "1.0.100"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b0674a1ddeecb70197781e945de4b3b8ffb61fa939a5597bcf48503737663100"
+checksum = "a23eb6b1614318a8071c9b2521f36b424b2c83db5eb3a0fead4a6c0809af6e61"
 
 [[package]]
 name = "autocfg"
@@ -101,9 +101,9 @@ checksum = "46c5e41b57b8bba42a04676d81cb89e9ee8e859a1a66f80a5a72e1cb76b34d43"
 
 [[package]]
 name = "cc"
-version = "1.2.36"
+version = "1.2.38"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5252b3d2648e5eedbc1a6f501e3c795e07025c1e93bbf8bbdd6eef7f447a6d54"
+checksum = "80f41ae168f955c12fb8960b057d70d0ca153fb83182b57d86380443527be7e9"
 dependencies = [
  "find-msvc-tools",
  "shlex",
@@ -125,7 +125,7 @@ dependencies = [
  "js-sys",
  "num-traits",
  "wasm-bindgen",
- "windows-link 0.2.0",
+ "windows-link",
 ]
 
 [[package]]
@@ -226,9 +226,9 @@ checksum = "37909eebbb50d72f9059c3b6d82c0463f2ff062c9e95845c43a6c9c0355411be"
 
 [[package]]
 name = "find-msvc-tools"
-version = "0.1.1"
+version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7fd99930f64d146689264c637b5af2f0233a933bef0d8570e2526bf9e083192d"
+checksum = "1ced73b1dacfc750a6db6c0a0c3a3853c8b41997e2e2c563dc90804ae6867959"
 
 [[package]]
 name = "fixedbitset"
@@ -271,6 +271,12 @@ dependencies = [
  "foldhash",
 ]
 
+[[package]]
+name = "hashbrown"
+version = "0.16.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5419bdc4f6a9207fbeba6d11b604d481addf78ecd10c11ad51e76c2f6482748d"
+
 [[package]]
 name = "heck"
 version = "0.5.0"
@@ -279,9 +285,9 @@ checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"
 
 [[package]]
 name = "iana-time-zone"
-version = "0.1.63"
+version = "0.1.64"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b0c919e5debc312ad217002b8048a17b7d83f80703865bbfcfebb0458b0b27d8"
+checksum = "33e57f83510bb73707521ebaffa789ec8caf86f9657cad665b092b581d40e9fb"
 dependencies = [
  "android_system_properties",
  "core-foundation-sys",
@@ -309,19 +315,19 @@ checksum = "b9e0384b61958566e926dc50660321d12159025e767c18e043daf26b70104c39"
 
 [[package]]
 name = "indexmap"
-version = "2.11.1"
+version = "2.11.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "206a8042aec68fa4a62e8d3f7aa4ceb508177d9324faf261e1959e495b7a1921"
+checksum = "4b0f83760fb341a774ed326568e19f5a863af4a952def8c39f9ab92fd95b88e5"
 dependencies = [
  "equivalent",
- "hashbrown",
+ "hashbrown 0.16.0",
 ]
 
 [[package]]
 name = "js-sys"
-version = "0.3.78"
+version = "0.3.80"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0c0b063578492ceec17683ef2f8c5e89121fbd0b172cbc280635ab7567db2738"
+checksum = "852f13bec5eba4ba9afbeb93fd7c13fe56147f055939ae21c43a29a0ecb2702e"
 dependencies = [
  "once_cell",
  "wasm-bindgen",
@@ -461,7 +467,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "54acf3a685220b533e437e264e4d932cfbdc4cc7ec0cd232ed73c08d03b8a7ca"
 dependencies = [
  "fixedbitset",
- "hashbrown",
+ "hashbrown 0.15.5",
  "indexmap",
 ]
 
@@ -721,24 +727,33 @@ dependencies = [
 
 [[package]]
 name = "semver"
-version = "1.0.26"
+version = "1.0.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "56e6fa9c48d24d85fb3de5ad847117517440f6beceb7798af16b4a87d616b8d0"
+checksum = "d767eb0aabc880b29956c35734170f26ed551a859dbd361d140cdbeca61ab1e2"
 
 [[package]]
 name = "serde"
-version = "1.0.219"
+version = "1.0.225"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5f0e2c6ed6606019b4e29e69dbaba95b11854410e5347d525002456dbbb786b6"
+checksum = "fd6c24dee235d0da097043389623fb913daddf92c76e9f5a1db88607a0bcbd1d"
+dependencies = [
+ "serde_core",
+]
+
+[[package]]
+name = "serde_core"
+version = "1.0.225"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "659356f9a0cb1e529b24c01e43ad2bdf520ec4ceaf83047b83ddcc2251f96383"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.219"
+version = "1.0.225"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5b0276cf7f2c73365f7157c8123c21cd9a50fbbd844757af28ca1f5925fc2a00"
+checksum = "0ea936adf78b1f766949a4977b91d2f5595825bd6ec079aa9543ad2685fc4516"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -878,27 +893,27 @@ dependencies = [
 
 [[package]]
 name = "wasi"
-version = "0.14.5+wasi-0.2.4"
+version = "0.14.7+wasi-0.2.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a4494f6290a82f5fe584817a676a34b9d6763e8d9d18204009fb31dceca98fd4"
+checksum = "883478de20367e224c0090af9cf5f9fa85bed63a95c1abf3afc5c083ebc06e8c"
 dependencies = [
  "wasip2",
 ]
 
 [[package]]
 name = "wasip2"
-version = "1.0.0+wasi-0.2.4"
+version = "1.0.1+wasi-0.2.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "03fa2761397e5bd52002cd7e73110c71af2109aca4e521a9f40473fe685b0a24"
+checksum = "0562428422c63773dad2c345a1882263bbf4d65cf3f42e90921f787ef5ad58e7"
 dependencies = [
  "wit-bindgen",
 ]
 
 [[package]]
 name = "wasm-bindgen"
-version = "0.2.101"
+version = "0.2.103"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7e14915cadd45b529bb8d1f343c4ed0ac1de926144b746e2710f9cd05df6603b"
+checksum = "ab10a69fbd0a177f5f649ad4d8d3305499c42bab9aef2f7ff592d0ec8f833819"
 dependencies = [
  "cfg-if",
  "once_cell",
@@ -909,9 +924,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-backend"
-version = "0.2.101"
+version = "0.2.103"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e28d1ba982ca7923fd01448d5c30c6864d0a14109560296a162f80f305fb93bb"
+checksum = "0bb702423545a6007bbc368fde243ba47ca275e549c8a28617f56f6ba53b1d1c"
 dependencies = [
  "bumpalo",
  "log",
@@ -923,9 +938,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-macro"
-version = "0.2.101"
+version = "0.2.103"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7c3d463ae3eff775b0c45df9da45d68837702ac35af998361e2c84e7c5ec1b0d"
+checksum = "fc65f4f411d91494355917b605e1480033152658d71f722a90647f56a70c88a0"
 dependencies = [
  "quote",
  "wasm-bindgen-macro-support",
@@ -933,9 +948,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-macro-support"
-version = "0.2.101"
+version = "0.2.103"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7bb4ce89b08211f923caf51d527662b75bdc9c9c7aab40f86dcb9fb85ac552aa"
+checksum = "ffc003a991398a8ee604a401e194b6b3a39677b3173d6e74495eb51b82e99a32"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -946,22 +961,22 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-shared"
-version = "0.2.101"
+version = "0.2.103"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f143854a3b13752c6950862c906306adb27c7e839f7414cec8fea35beab624c1"
+checksum = "293c37f4efa430ca14db3721dfbe48d8c33308096bd44d80ebaa775ab71ba1cf"
 dependencies = [
  "unicode-ident",
 ]
 
 [[package]]
 name = "windows-core"
-version = "0.61.2"
+version = "0.62.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c0fdd3ddb90610c7638aa2b3a3ab2904fb9e5cdbecc643ddb3647212781c4ae3"
+checksum = "57fe7168f7de578d2d8a05b07fd61870d2e73b4020e9f49aa00da8471723497c"
 dependencies = [
  "windows-implement",
  "windows-interface",
- "windows-link 0.1.3",
+ "windows-link",
  "windows-result",
  "windows-strings",
 ]
@@ -988,12 +1003,6 @@ dependencies = [
  "syn",
 ]
 
-[[package]]
-name = "windows-link"
-version = "0.1.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5e6ad25900d524eaabdbbb96d20b4311e1e7ae1699af4fb28c17ae66c80d798a"
-
 [[package]]
 name = "windows-link"
 version = "0.2.0"
@@ -1002,20 +1011,20 @@ checksum = "45e46c0661abb7180e7b9c281db115305d49ca1709ab8242adf09666d2173c65"
 
 [[package]]
 name = "windows-result"
-version = "0.3.4"
+version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "56f42bd332cc6c8eac5af113fc0c1fd6a8fd2aa08a0119358686e5160d0586c6"
+checksum = "7084dcc306f89883455a206237404d3eaf961e5bd7e0f312f7c91f57eb44167f"
 dependencies = [
- "windows-link 0.1.3",
+ "windows-link",
 ]
 
 [[package]]
 name = "windows-strings"
-version = "0.4.2"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "56e6c93f3a0c3b36176cb1327a4958a0353d5d166c2a35cb268ace15e91d3b57"
+checksum = "7218c655a553b0bed4426cf54b20d7ba363ef543b52d515b3e48d7fd55318dda"
 dependencies = [
- "windows-link 0.1.3",
+ "windows-link",
 ]
 
 [[package]]
@@ -1024,14 +1033,14 @@ version = "0.61.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e201184e40b2ede64bc2ea34968b28e33622acdbbf37104f0e4a33f7abe657aa"
 dependencies = [
- "windows-link 0.2.0",
+ "windows-link",
 ]
 
 [[package]]
 name = "wit-bindgen"
-version = "0.45.1"
+version = "0.46.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5c573471f125075647d03df72e026074b7203790d41351cd6edc96f46bcccd36"
+checksum = "f17a85883d4e6d00e8a97c586de764dabcc06133f7f1d55dce5cdc070ad7fe59"
 
 [[package]]
 name = "zerocopy"
diff --git a/Cargo.toml b/Cargo.toml
index c7508f5..3f609d0 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -14,7 +14,7 @@ repository = "https://github.com/krahos/planter-core"
 path = "src/lib.rs"
 
 [dependencies]
-anyhow = "1.0.99"
+anyhow = "1.0.100"
 chrono = "0.4.42"
 once_cell = "1.21.3"
 daggy = "0.9.0"
diff --git a/flake.lock b/flake.lock
index 0f51412..46ff368 100644
--- a/flake.lock
+++ b/flake.lock
@@ -20,11 +20,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1757068644,
-        "narHash": "sha256-NOrUtIhTkIIumj1E/Rsv1J37Yi3xGStISEo8tZm3KW4=",
+        "lastModified": 1758277210,
+        "narHash": "sha256-iCGWf/LTy+aY0zFu8q12lK8KuZp7yvdhStehhyX1v8w=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "8eb28adfa3dc4de28e792e3bf49fcf9007ca8ac9",
+        "rev": "8eaee110344796db060382e15d3af0a9fc396e0e",
         "type": "github"
       },
       "original": {
@@ -62,11 +62,11 @@
         "nixpkgs": "nixpkgs_2"
       },
       "locked": {
-        "lastModified": 1757212513,
-        "narHash": "sha256-ZTHwY7u8BQF1JUazhGk+ftCjsS57Ht6KSnnkxQoUBA8=",
+        "lastModified": 1758335443,
+        "narHash": "sha256-2jaGMj32IckpZgBjn7kG4zyJl66T+2A1Fn2ppkHh91o=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "a8c2f9348abb14647d8a4899d1b3acd0155ce2cd",
+        "rev": "f1ccb14649cf87e48051a6ac3a571b4a57d84ff3",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index 547019e..844aab8 100644
--- a/flake.nix
+++ b/flake.nix
@@ -20,7 +20,6 @@
         devShells.default = mkShell {
           buildInputs = [
             bacon
-            cargo-udeps
             cargo-edit
             rust-analyzer
             cargo-deny
diff --git a/src/task.rs b/src/task.rs
index 5aa3e6b..cd374a7 100644
--- a/src/task.rs
+++ b/src/task.rs
@@ -1,4 +1,5 @@
 use crate::{duration::PositiveDuration, resources::Resource};
+use anyhow::Context;
 use chrono::{DateTime, Utc};
 
 #[derive(Debug, Clone, Default, PartialEq, Eq)]
@@ -61,9 +62,10 @@ impl Task {
     ///
     /// * `start` - The new start time of the task.
     ///
-    /// # Panics
+    /// # Errors
     ///
-    /// Panics if start and end times are too far apart see [`duration`] for details.
+    /// Returns an error if the task has a finish date and the start date passed
+    /// as parameter is too far from that.
     ///
     /// # Example
     ///
@@ -77,7 +79,7 @@ impl Task {
     /// assert_eq!(task.start().unwrap(), start_time);
     /// ```
     #[allow(clippy::expect_used)]
-    pub fn edit_start(&mut self, start: DateTime<Utc>) {
+    pub fn edit_start(&mut self, start: DateTime<Utc>) -> anyhow::Result<()> {
         self.start = Some(start);
 
         if let Some(duration) = self.duration {
@@ -93,10 +95,11 @@ impl Task {
                 self.duration = Some(
                     duration
                         .try_into()
-                        .expect("Start time and end time were too far apart"),
+                        .context("Start time and finish time were too far apart")?,
                 );
             }
         }
+        Ok(())
     }
 
     /// Returns the start time of the task. It's None by default.
@@ -126,9 +129,11 @@ impl Task {
     ///
     /// * `finish` - The new finish time of the task.
     ///
-    /// # Panics
+    /// # Errors
+    ///
+    /// Returns an error if the task has a start date and the finish date passed
+    /// as parameter is too far from that.
     ///
-    /// Panics if start and end times are too far apart see [`duration`] for details.
     ///
     /// # Example
     ///
@@ -140,11 +145,11 @@ impl Task {
     /// assert!(task.start().is_none());
     ///
     /// let mut finish_time = Utc::now();
-    /// task.edit_finish(finish_time);
+    /// task.edit_finish(finish_time).unwrap();
     /// assert_eq!(task.finish().unwrap(), finish_time);
     /// ```
     #[allow(clippy::expect_used)]
-    pub fn edit_finish(&mut self, finish: DateTime<Utc>) {
+    pub fn edit_finish(&mut self, finish: DateTime<Utc>) -> anyhow::Result<()> {
         self.finish = Some(finish);
 
         if let Some(start) = self.start() {
@@ -158,9 +163,10 @@ impl Task {
             self.duration = Some(
                 duration
                     .try_into()
-                    .expect("Start time and end time were too far apart"),
+                    .context("Start time and finish time were too far apart")?,
             );
         }
+        Ok(())
     }
 
     /// Returns the finish time of the task. It's None by default.
@@ -399,8 +405,8 @@ mod tests {
             let finish = start + Duration::milliseconds(milliseconds);
             let mut task = Task::new("World domination");
 
-            task.edit_start(start);
-            task.edit_finish(finish);
+            task.edit_start(start).unwrap();
+            task.edit_finish(finish).unwrap();
 
             assert!(task.duration().unwrap() == Duration::milliseconds(milliseconds).try_into().unwrap());
         }
@@ -420,7 +426,7 @@ mod tests {
             let start = Utc::now();
             let mut task = Task::new("World domination");
 
-            task.edit_start(start);
+            task.edit_start(start).unwrap();
             let duration = Duration::milliseconds(milliseconds).try_into().unwrap();
             task.edit_duration(duration);
             assert!(task.finish().unwrap() == start + *duration);
@@ -432,24 +438,49 @@ mod tests {
             let finish = start + Duration::milliseconds(milliseconds);
             let mut task = Task::new("World domination");
 
-            task.edit_start(start);
-            task.edit_finish(finish);
+            task.edit_start(start).unwrap();
+            task.edit_finish(finish).unwrap();
 
             let duration = Duration::milliseconds(milliseconds + 1).try_into().unwrap();
             task.edit_duration(duration);
             assert!(task.finish().unwrap() == start + *duration);
         }
 
+
         #[test]
-        fn start_time_is_properly_pushed_back_when_adding_earlier_end_time(milliseconds in 0..MAX_DURATION) {
+        fn start_time_is_properly_pushed_back_when_adding_earlier_finish_time(milliseconds in 0..MAX_DURATION) {
             let start = Utc::now();
             let finish = start - Duration::milliseconds(milliseconds);
             let mut task = Task::new("World domination");
 
-            task.edit_start(start);
-            task.edit_finish(finish);
+            task.edit_start(start).unwrap();
+            task.edit_finish(finish).unwrap();
 
             assert!(task.start().unwrap() == task.finish().unwrap());
         }
     }
+
+    #[test]
+    fn edit_start_returns_error_when_too_far_apart() {
+        let milliseconds = MAX_DURATION + 1;
+        let finish = Utc::now();
+        let start = finish - Duration::milliseconds(milliseconds);
+        let mut task = Task::new("World domination");
+
+        task.edit_finish(finish).unwrap();
+
+        assert!(task.edit_start(start).is_err());
+    }
+
+    #[test]
+    fn edit_finish_returns_error_when_too_far_apart() {
+        let milliseconds = MAX_DURATION + 1;
+        let start = Utc::now();
+        let finish = start + Duration::milliseconds(milliseconds);
+        let mut task = Task::new("World domination");
+
+        task.edit_start(start).unwrap();
+
+        assert!(task.edit_finish(finish).is_err());
+    }
 }