diff --git a/Cargo.lock b/Cargo.lock
index 4fdfdfc..50d56a0 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -351,11 +351,11 @@ dependencies = [
 
 [[package]]
 name = "exponential-backoff"
-version = "1.2.0"
+version = "2.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "47f78d87d930eee4b5686a2ab032de499c72bd1e954b84262bb03492a0f932cd"
+checksum = "6ffb309d235a642598183aeda8925e871e85dd5a433c2c877e69ff0a960f4c02"
 dependencies = [
- "rand",
+ "fastrand",
 ]
 
 [[package]]
@@ -825,12 +825,6 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "439ee305def115ba05938db6eb1644ff94165c5ab5e9420d1c1bcedbba909391"
 
-[[package]]
-name = "ppv-lite86"
-version = "0.2.17"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5b40af805b3121feab8a3c29f04d8ad262fa8e0561883e7653e024ae4479e6de"
-
 [[package]]
 name = "proc-macro2"
 version = "1.0.85"
@@ -849,36 +843,6 @@ dependencies = [
  "proc-macro2",
 ]
 
-[[package]]
-name = "rand"
-version = "0.8.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
-dependencies = [
- "libc",
- "rand_chacha",
- "rand_core",
-]
-
-[[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",
-]
-
-[[package]]
-name = "rand_core"
-version = "0.6.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
-dependencies = [
- "getrandom",
-]
-
 [[package]]
 name = "redox_syscall"
 version = "0.4.1"
diff --git a/buildpacks/php/Cargo.toml b/buildpacks/php/Cargo.toml
index c62c5ca..89e0881 100644
--- a/buildpacks/php/Cargo.toml
+++ b/buildpacks/php/Cargo.toml
@@ -28,6 +28,6 @@ warned = "0.1"
 
 [dev-dependencies]
 assert-json-diff = "2"
-exponential-backoff = "1"
+exponential-backoff = "2"
 figment = { version = "0.10", features = ["toml"] }
 libcnb-test = "=0.21.0"