diff --git a/services/horizon/internal/integration/contracts/Cargo.lock b/services/horizon/internal/integration/contracts/Cargo.lock
index e80d7d5d28..618e5b2676 100644
--- a/services/horizon/internal/integration/contracts/Cargo.lock
+++ b/services/horizon/internal/integration/contracts/Cargo.lock
@@ -213,16 +213,15 @@ dependencies = [
 
 [[package]]
 name = "curve25519-dalek"
-version = "4.1.1"
+version = "4.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e89b8c6a2e4b1f45971ad09761aafb85514a84744b67a95e32c3cc1352d1f65c"
+checksum = "97fb8b7c4503de7d6ae7b42ab72a5a59857b4c937ec27a3d4539dba95b5ab2be"
 dependencies = [
  "cfg-if",
  "cpufeatures",
  "curve25519-dalek-derive",
  "digest",
  "fiat-crypto",
- "platforms",
  "rustc_version",
  "subtle",
  "zeroize",
@@ -707,12 +706,6 @@ dependencies = [
  "spki",
 ]
 
-[[package]]
-name = "platforms"
-version = "3.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "14e6ab3f592e6fb464fc9712d8d6e6912de6473954635fd76a589d832cffcbb0"
-
 [[package]]
 name = "powerfmt"
 version = "0.2.0"