diff --git a/Cargo.lock b/Cargo.lock
index c065541..77c8b13 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -8,17 +8,6 @@ version = "2.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "320119579fcad9c21884f5c4861d16174d0e06250625266f50fe6898340abefa"
 
-[[package]]
-name = "ahash"
-version = "0.7.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "891477e0c6a8957309ee5c45a6368af3ae14bb510732d2684ffa19af310920f9"
-dependencies = [
- "getrandom 0.2.16",
- "once_cell",
- "version_check",
-]
-
 [[package]]
 name = "aho-corasick"
 version = "1.1.4"
@@ -87,12 +76,6 @@ dependencies = [
  "windows-sys 0.61.2",
 ]
 
-[[package]]
-name = "arrayvec"
-version = "0.7.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7c02d123df017efcdfbd739ef81735b36c5ba83ec3c59c80a9d7ecc718f92e50"
-
 [[package]]
 name = "async-trait"
 version = "0.1.89"
@@ -101,7 +84,7 @@ checksum = "9035ad2d096bed7955a320ee7e2230574d28fd3c3a0f186cbea1ff3c7eed5dbb"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.111",
+ "syn",
 ]
 
 [[package]]
@@ -156,69 +139,12 @@ version = "2.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "812e12b5285cc515a9c72a5c1d3b6d46a19dac5acfef5265968c166106e31dd3"
 
-[[package]]
-name = "bitvec"
-version = "1.0.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1bc2832c24239b0141d5674bb9174f9d68a8b5b3f2753311927c172ca46f7e9c"
-dependencies = [
- "funty",
- "radium",
- "tap",
- "wyz",
-]
-
-[[package]]
-name = "borsh"
-version = "1.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d1da5ab77c1437701eeff7c88d968729e7766172279eab0676857b3d63af7a6f"
-dependencies = [
- "borsh-derive",
- "cfg_aliases",
-]
-
-[[package]]
-name = "borsh-derive"
-version = "1.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0686c856aa6aac0c4498f936d7d6a02df690f614c03e4d906d1018062b5c5e2c"
-dependencies = [
- "once_cell",
- "proc-macro-crate",
- "proc-macro2",
- "quote",
- "syn 2.0.111",
-]
-
 [[package]]
 name = "bumpalo"
 version = "3.19.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "46c5e41b57b8bba42a04676d81cb89e9ee8e859a1a66f80a5a72e1cb76b34d43"
 
-[[package]]
-name = "bytecheck"
-version = "0.6.12"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "23cdc57ce23ac53c931e88a43d06d070a6fd142f2617be5855eb75efc9beb1c2"
-dependencies = [
- "bytecheck_derive",
- "ptr_meta",
- "simdutf8",
-]
-
-[[package]]
-name = "bytecheck_derive"
-version = "0.6.12"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3db406d29fbcd95542e92559bed4d8ad92636d1ca8b3b72ede10b4bcc010e659"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn 1.0.109",
-]
-
 [[package]]
 name = "bytemuck"
 version = "1.24.0"
@@ -363,7 +289,7 @@ dependencies = [
  "heck",
  "proc-macro2",
  "quote",
- "syn 2.0.111",
+ "syn",
 ]
 
 [[package]]
@@ -465,7 +391,7 @@ checksum = "97369cbbc041bc366949bc74d34658d6cda5621039731c6310521892a3a20ae0"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.111",
+ "syn",
 ]
 
 [[package]]
@@ -587,7 +513,7 @@ checksum = "1a5c6c585bc94aaf2c7b51dd4c2ba22680844aba4c687be581871a6f518c5742"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.111",
+ "syn",
 ]
 
 [[package]]
@@ -622,12 +548,6 @@ version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "42703706b716c37f96a77aea830392ad231f44c9e9a67872fa5548707e11b11c"
 
-[[package]]
-name = "funty"
-version = "2.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e6d5a32815ae3f33302d95fdcb2ce17862f8c65363dcfd29360480ba1001fc9c"
-
 [[package]]
 name = "futures-channel"
 version = "0.3.31"
@@ -651,7 +571,7 @@ checksum = "162ee34ebcb7c64a8abebc059ce0fee27c2262618d7b60ed8faf72fef13c3650"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.111",
+ "syn",
 ]
 
 [[package]]
@@ -739,15 +659,6 @@ dependencies = [
  "tracing",
 ]
 
-[[package]]
-name = "hashbrown"
-version = "0.12.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8a9ee70c43aaf417c914396645a0fa852624801b24ebb7ae78fe8272889ac888"
-dependencies = [
- "ahash",
-]
-
 [[package]]
 name = "hashbrown"
 version = "0.16.1"
@@ -1022,7 +933,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0ad4bb2b565bca0645f4d68c5c9af97fba094e9791da685bf83cb5f3ce74acf2"
 dependencies = [
  "equivalent",
- "hashbrown 0.16.1",
+ "hashbrown",
 ]
 
 [[package]]
@@ -1123,7 +1034,7 @@ dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote",
- "syn 2.0.111",
+ "syn",
 ]
 
 [[package]]
@@ -1308,7 +1219,7 @@ checksum = "6e918e4ff8c4549eb882f14b3a4bc8c8bc93de829416eacf579f1207a8fbf861"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.111",
+ "syn",
 ]
 
 [[package]]
@@ -1429,7 +1340,6 @@ dependencies = [
  "displaydoc",
  "plotters",
  "reqwest",
- "rust_decimal",
  "serde",
  "serde_json",
  "tokio",
@@ -1438,26 +1348,6 @@ dependencies = [
  "url",
 ]
 
-[[package]]
-name = "ptr_meta"
-version = "0.1.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0738ccf7ea06b608c10564b31debd4f5bc5e197fc8bfe088f68ae5ce81e7a4f1"
-dependencies = [
- "ptr_meta_derive",
-]
-
-[[package]]
-name = "ptr_meta_derive"
-version = "0.1.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "16b845dbfca988fa33db069c0e230574d15a3088f147a87b64c7589eb662c9ac"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn 1.0.109",
-]
-
 [[package]]
 name = "quinn"
 version = "0.11.9"
@@ -1487,7 +1377,7 @@ dependencies = [
  "bytes",
  "getrandom 0.3.4",
  "lru-slab",
- "rand 0.9.2",
+ "rand",
  "ring",
  "rustc-hash",
  "rustls",
@@ -1528,41 +1418,14 @@ version = "5.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "69cdb34c158ceb288df11e18b4bd39de994f6657d83847bdffdbd7f346754b0f"
 
-[[package]]
-name = "radium"
-version = "0.7.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dc33ff2d4973d518d823d61aa239014831e521c75da58e3df4840d3f47749d09"
-
-[[package]]
-name = "rand"
-version = "0.8.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
-dependencies = [
- "libc",
- "rand_chacha 0.3.1",
- "rand_core 0.6.4",
-]
-
 [[package]]
 name = "rand"
 version = "0.9.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6db2770f06117d490610c7488547d543617b21bfa07796d7a12f6f1bd53850d1"
 dependencies = [
- "rand_chacha 0.9.0",
- "rand_core 0.9.3",
-]
-
-[[package]]
-name = "rand_chacha"
-version = "0.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
-dependencies = [
- "ppv-lite86",
- "rand_core 0.6.4",
+ "rand_chacha",
+ "rand_core",
 ]
 
 [[package]]
@@ -1572,16 +1435,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d3022b5f1df60f26e1ffddd6c66e8aa15de382ae63b3a0c1bfc0e4d3e3f325cb"
 dependencies = [
  "ppv-lite86",
- "rand_core 0.9.3",
-]
-
-[[package]]
-name = "rand_core"
-version = "0.6.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
-dependencies = [
- "getrandom 0.2.16",
+ "rand_core",
 ]
 
 [[package]]
@@ -1621,15 +1475,6 @@ version = "0.8.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7a2d987857b319362043e95f5353c0535c1f58eec5336fdfcf626430af7def58"
 
-[[package]]
-name = "rend"
-version = "0.4.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "71fe3824f5629716b1589be05dacd749f6aa084c87e00e016714a8cdfccc997c"
-dependencies = [
- "bytecheck",
-]
-
 [[package]]
 name = "reqwest"
 version = "0.12.24"
@@ -1682,51 +1527,6 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
-[[package]]
-name = "rkyv"
-version = "0.7.45"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9008cd6385b9e161d8229e1f6549dd23c3d022f132a2ea37ac3a10ac4935779b"
-dependencies = [
- "bitvec",
- "bytecheck",
- "bytes",
- "hashbrown 0.12.3",
- "ptr_meta",
- "rend",
- "rkyv_derive",
- "seahash",
- "tinyvec",
- "uuid",
-]
-
-[[package]]
-name = "rkyv_derive"
-version = "0.7.45"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "503d1d27590a2b0a3a4ca4c94755aa2875657196ecbf401a42eff41d7de532c0"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn 1.0.109",
-]
-
-[[package]]
-name = "rust_decimal"
-version = "1.39.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "35affe401787a9bd846712274d97654355d21b2a2c092a3139aabe31e9022282"
-dependencies = [
- "arrayvec",
- "borsh",
- "bytes",
- "num-traits",
- "rand 0.8.5",
- "rkyv",
- "serde",
- "serde_json",
-]
-
 [[package]]
 name = "rustc-hash"
 version = "2.1.1"
@@ -1801,12 +1601,6 @@ dependencies = [
  "winapi-util",
 ]
 
-[[package]]
-name = "seahash"
-version = "4.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1c107b6f4780854c8b126e228ea8869f4d7b71260f962fefb57b996b8959ba6b"
-
 [[package]]
 name = "semver"
 version = "1.0.27"
@@ -1840,7 +1634,7 @@ checksum = "d540f220d3187173da220f885ab66608367b6574e925011a9353e4badda91d79"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.111",
+ "syn",
 ]
 
 [[package]]
@@ -1900,9 +1694,8 @@ dependencies = [
  "hyper-util",
  "jsonrpsee",
  "prom-client",
- "rand 0.9.2",
+ "rand",
  "reqwest",
- "rust_decimal",
  "rustls",
  "serde",
  "serde_json",
@@ -1931,12 +1724,6 @@ version = "0.3.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d66dc143e6b11c1eddc06d5c423cfc97062865baf299914ab64caa38182078fe"
 
-[[package]]
-name = "simdutf8"
-version = "0.1.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e3a9fe34e3e7a50316060351f37187a3f546bce95496156754b601a5fa71b76e"
-
 [[package]]
 name = "slab"
 version = "0.4.11"
@@ -1977,17 +1764,6 @@ version = "2.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "13c2bddecc57b384dee18652358fb23172facb8a2c51ccc10d74c157bdea3292"
 
-[[package]]
-name = "syn"
-version = "1.0.109"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "72b64191b275b66ffe2469e8af2c1cfe3bafa67b529ead792a6d0160888b4237"
-dependencies = [
- "proc-macro2",
- "quote",
- "unicode-ident",
-]
-
 [[package]]
 name = "syn"
 version = "2.0.111"
@@ -2016,7 +1792,7 @@ checksum = "728a70f3dbaf5bab7f0c4b1ac8d7ae5ea60a4b5549c8a5914361c99147a709d2"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.111",
+ "syn",
 ]
 
 [[package]]
@@ -2029,12 +1805,6 @@ dependencies = [
  "time",
 ]
 
-[[package]]
-name = "tap"
-version = "1.0.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "55937e1799185b12863d447f42597ed69d9928686b8d88a1df17376a097d8369"
-
 [[package]]
 name = "thiserror"
 version = "2.0.17"
@@ -2052,7 +1822,7 @@ checksum = "3ff15c8ecd7de3849db632e14d18d2571fa09dfc5ed93479bc4485c7a517c913"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.111",
+ "syn",
 ]
 
 [[package]]
@@ -2132,7 +1902,7 @@ checksum = "af407857209536a95c8e56f8231ef2c2e2aff839b22e07a1ffcbc617e9db9fa5"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.111",
+ "syn",
 ]
 
 [[package]]
@@ -2263,7 +2033,7 @@ checksum = "7490cfa5ec963746568740651ac6781f701c9c5ea257c58e057f3ba8cf69e8da"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.111",
+ "syn",
 ]
 
 [[package]]
@@ -2353,28 +2123,12 @@ version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "06abde3611657adf66d383f00b093d7faecc7fa57071cce2578660c9f1010821"
 
-[[package]]
-name = "uuid"
-version = "1.19.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e2e054861b4bd027cd373e18e8d8d8e6548085000e41290d95ce0c373a654b4a"
-dependencies = [
- "js-sys",
- "wasm-bindgen",
-]
-
 [[package]]
 name = "valuable"
 version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ba73ea9cf16a25df0c8caa16c51acb937d5712a8429db78a3ee29d5dcacd3a65"
 
-[[package]]
-name = "version_check"
-version = "0.9.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0b928f33d975fc6ad9f86c8f283853ad26bdd5b10b7f1542aa2fa15e2289105a"
-
 [[package]]
 name = "walkdir"
 version = "2.5.0"
@@ -2454,7 +2208,7 @@ dependencies = [
  "bumpalo",
  "proc-macro2",
  "quote",
- "syn 2.0.111",
+ "syn",
  "wasm-bindgen-shared",
 ]
 
@@ -2548,7 +2302,7 @@ checksum = "053e2e040ab57b9dc951b72c264860db7eb3b0200ba345b4e4c3b14f67855ddf"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.111",
+ "syn",
 ]
 
 [[package]]
@@ -2559,7 +2313,7 @@ checksum = "3f316c4a2570ba26bbec722032c4099d8c8bc095efccdc15688708623367e358"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.111",
+ "syn",
 ]
 
 [[package]]
@@ -2772,15 +2526,6 @@ version = "0.6.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9edde0db4769d2dc68579893f2306b26c6ecfbe0ef499b013d731b7b9247e0b9"
 
-[[package]]
-name = "wyz"
-version = "0.5.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "05f360fc0b24296329c78fda852a1e9ae82de9cf7b27dae4b7f62f118f77b9ed"
-dependencies = [
- "tap",
-]
-
 [[package]]
 name = "yeslogic-fontconfig-sys"
 version = "6.0.0"
@@ -2811,7 +2556,7 @@ checksum = "b659052874eb698efe5b9e8cf382204678a0086ebf46982b79d6ca3182927e5d"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.111",
+ "syn",
  "synstructure",
 ]
 
@@ -2832,7 +2577,7 @@ checksum = "d8a8d209fdf45cf5138cbb5a506f6b52522a25afccc534d1475dad8e31105c6a"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.111",
+ "syn",
 ]
 
 [[package]]
@@ -2852,7 +2597,7 @@ checksum = "d71e5d6e06ab090c67b5e44993ec16b72dcbaabc526db883a360057678b48502"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.111",
+ "syn",
  "synstructure",
 ]
 
@@ -2892,5 +2637,5 @@ checksum = "eadce39539ca5cb3985590102671f2567e659fca9666581ad3411d59207951f3"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.111",
+ "syn",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index 4e08b2b..69b3825 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -39,7 +39,6 @@ jsonrpsee = { version = "0.26", features = ["macros", "async-client"] }
 plotters = { version = "0.3", default-features = false, features = ["bitmap_backend", "bitmap_encoder", "ttf", "datetime", "area_series", "line_series", "full_palette"] }
 rand = "0.9"
 reqwest = { version = "0.12", default-features = false, features = ["json", "rustls-tls"] }
-rust_decimal = { version = "1", features = ["serde-with-str"] }
 rustls = "0.23"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
diff --git a/prom-client/Cargo.toml b/prom-client/Cargo.toml
index c8d05ba..f50ba00 100644
--- a/prom-client/Cargo.toml
+++ b/prom-client/Cargo.toml
@@ -11,7 +11,6 @@ async-trait = { workspace = true }
 chrono = { workspace = true }
 displaydoc = { workspace = true }
 reqwest = { workspace = true }
-rust_decimal = { workspace = true }
 serde = { workspace = true }
 tracing = { workspace = true }
 url = { workspace = true }
diff --git a/prom-client/src/lib.rs b/prom-client/src/lib.rs
index 08d6a8e..9ee84a0 100644
--- a/prom-client/src/lib.rs
+++ b/prom-client/src/lib.rs
@@ -29,7 +29,7 @@ pub use labels::{ExtractLabels, Labels};
 mod messages;
 use messages::PromResponse;
 pub use messages::{
-    AlertInfo, AlertStatus, AlertsResponse, MetricTimeseries, MetricValue, PromData,
+    AlertInfo, AlertStatus, AlertsResponse, MetricTimeseries, MetricVal, MetricValue, PromData,
 };
 
 #[cfg(feature = "plot")]
diff --git a/prom-client/src/messages.rs b/prom-client/src/messages.rs
index 89eda2d..5e6dbdb 100644
--- a/prom-client/src/messages.rs
+++ b/prom-client/src/messages.rs
@@ -26,11 +26,38 @@
 
 use crate::Error;
 use chrono::{DateTime, Utc};
-use rust_decimal::Decimal;
-use serde::{Deserialize, de::DeserializeOwned};
-use std::{collections::HashMap, fmt::Debug};
+use serde::{Deserialize, Deserializer, de::DeserializeOwned};
+use std::{collections::HashMap, fmt::{self, Debug, Display}};
 use tracing::warn;
 
+/// Wrapper for f64 that deserializes from a string (prometheus returns numeric values as strings)
+#[derive(Clone, Copy, Debug)]
+pub struct MetricVal(pub f64);
+
+impl Display for MetricVal {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        Display::fmt(&self.0, f)
+    }
+}
+
+impl AsRef<f64> for MetricVal {
+    fn as_ref(&self) -> &f64 {
+        &self.0
+    }
+}
+
+impl<'de> Deserialize<'de> for MetricVal {
+    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+    where
+        D: Deserializer<'de>,
+    {
+        let s = <&str>::deserialize(deserializer)?;
+        s.parse::<f64>()
+            .map(MetricVal)
+            .map_err(serde::de::Error::custom)
+    }
+}
+
 #[derive(Clone, Debug, Deserialize)]
 #[serde(bound = "KV: DeserializeOwned")]
 pub struct MetricValue<KV = HashMap<String, String>>
@@ -39,7 +66,7 @@ where
 {
     pub metric: KV,
     #[serde(default)]
-    pub value: Option<(f64, Decimal)>,
+    pub value: Option<(f64, MetricVal)>,
     // TODO: Include histograms
 }
 
@@ -51,7 +78,7 @@ where
 {
     pub metric: KV,
     #[serde(default)]
-    pub values: Vec<(f64, Decimal)>,
+    pub values: Vec<(f64, MetricVal)>,
     // TODO: Include histograms
 }
 
diff --git a/prom-client/src/plot.rs b/prom-client/src/plot.rs
index ef11832..91c3ad7 100644
--- a/prom-client/src/plot.rs
+++ b/prom-client/src/plot.rs
@@ -1,7 +1,6 @@
 use crate::{ExtractLabels, MetricTimeseries};
 use chrono::{DateTime, FixedOffset, TimeZone, Utc};
 use plotters::prelude::*;
-use rust_decimal::prelude::ToPrimitive;
 use std::{
     borrow::Borrow,
     error::Error,
@@ -235,7 +234,7 @@ impl PreparedPlot {
                     .iter()
                     .filter_map(|(k, v)| {
                         let x = f64_to_datetime(k)?;
-                        let y = v.to_f64()?;
+                        let y = *v.as_ref();
                         extend_range(&mut x_range, &x);
                         extend_range(&mut y_range, &y);
 
diff --git a/signal-gateway/Cargo.toml b/signal-gateway/Cargo.toml
index 393479c..5c199d0 100644
--- a/signal-gateway/Cargo.toml
+++ b/signal-gateway/Cargo.toml
@@ -23,7 +23,6 @@ hyper-util = { workspace = true }
 jsonrpsee = { workspace = true }
 rand = { workspace = true }
 reqwest = { workspace = true }
-rust_decimal = { workspace = true }
 rustls = { workspace = true }
 serde = { workspace = true }
 serde_json = { workspace = true }
diff --git a/signal-gateway/src/plotter.rs b/signal-gateway/src/plotter.rs
index d126932..246f65c 100644
--- a/signal-gateway/src/plotter.rs
+++ b/signal-gateway/src/plotter.rs
@@ -8,7 +8,7 @@ use prom_client::{
 };
 use rand::RngCore;
 use reqwest::Client as ReqwestClient;
-use rust_decimal::Decimal;
+use prom_client::MetricVal;
 use std::{error::Error, str::FromStr, time::Duration};
 use tracing::{info, warn};
 use walkdir::WalkDir;
@@ -162,7 +162,7 @@ impl Plotter {
     pub async fn oneoff_query(
         &self,
         query: String,
-    ) -> Result<(ExtractLabels, Vec<Option<(f64, Decimal)>>), Box<dyn Error>> {
+    ) -> Result<(ExtractLabels, Vec<Option<(f64, MetricVal)>>), Box<dyn Error>> {
         info!("Prom query: {query}");
         let vector: Vec<MetricValue> = QueryRequest { query, time: None }
             .send_with_client(&self.reqwest_client, &self.config.prometheus_host)