diff --git a/zerotier-core-crypto/Cargo.toml b/zerotier-core-crypto/Cargo.toml
index 378c67ef6..9d7af8642 100644
--- a/zerotier-core-crypto/Cargo.toml
+++ b/zerotier-core-crypto/Cargo.toml
@@ -21,4 +21,4 @@ heapless = "0.7.7"
 subtle = "2.4.1"
 
 [dev-dependencies]
-quickcheck = "^1"
+quickcheck = "1.0.3"
diff --git a/zerotier-network-hypervisor/Cargo.toml b/zerotier-network-hypervisor/Cargo.toml
index 25a043bac..09d938a61 100644
--- a/zerotier-network-hypervisor/Cargo.toml
+++ b/zerotier-network-hypervisor/Cargo.toml
@@ -14,11 +14,9 @@ panic = 'abort'
 [dependencies]
 zerotier-core-crypto = { path = "../zerotier-core-crypto" }
 base64 = "^0"
-urlencoding = "^2"
 lz4_flex = { version = "^0", features = ["safe-encode", "safe-decode", "checked-decode"] }
 dashmap = "^4"
 parking_lot = "^0"
-simple-error = "^0"
 
 [target."cfg(not(windows))".dependencies]
 libc = "^0"
diff --git a/zerotier-network-hypervisor/src/vl1/endpoint.rs b/zerotier-network-hypervisor/src/vl1/endpoint.rs
index ade08fbf1..679698283 100644
--- a/zerotier-network-hypervisor/src/vl1/endpoint.rs
+++ b/zerotier-network-hypervisor/src/vl1/endpoint.rs
@@ -351,7 +351,7 @@ impl ToString for Endpoint {
             Endpoint::IpUdp(ip) => format!("udp:{}", ip.to_string()),
             Endpoint::IpTcp(ip) => format!("tcp:{}", ip.to_string()),
             Endpoint::Http(url) => url.clone(),
-            Endpoint::WebRTC(offer) => format!("webrtc:{}", urlencoding::encode(String::from_utf8_lossy(offer.as_slice()).as_ref())),
+            Endpoint::WebRTC(offer) => format!("webrtc:{}", base64::encode(offer.as_slice())),
         }
     }
 }
diff --git a/zerotier-system-service/Cargo.lock b/zerotier-system-service/Cargo.lock
index d22e2036f..b8fde2dab 100644
--- a/zerotier-system-service/Cargo.lock
+++ b/zerotier-system-service/Cargo.lock
@@ -1625,12 +1625,6 @@ version = "1.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c19772be3c4dd2ceaacf03cb41d5885f2a02c4d8804884918e3a258480803335"
 
-[[package]]
-name = "simple-error"
-version = "0.2.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cc47a29ce97772ca5c927f75bac34866b16d64e07f330c3248e2d7226623901b"
-
 [[package]]
 name = "simple-mutex"
 version = "1.1.5"
@@ -1990,12 +1984,6 @@ dependencies = [
  "serde",
 ]
 
-[[package]]
-name = "urlencoding"
-version = "2.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "68b90931029ab9b034b300b797048cf23723400aa757e8a2bfb9d748102f9821"
-
 [[package]]
 name = "value-bag"
 version = "1.0.0-alpha.8"
@@ -2234,8 +2222,6 @@ dependencies = [
  "libc",
  "lz4_flex",
  "parking_lot",
- "simple-error",
- "urlencoding",
  "winapi",
  "zerotier-core-crypto",
 ]