diff --git a/Cargo.lock b/Cargo.lock
index ed36c25..506f2c8 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4,14 +4,14 @@ version = "0.1.0"
 dependencies = [
  "docopt 0.6.80 (registry+https://github.com/rust-lang/crates.io-index)",
  "git2 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "hyper 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "hyper 0.9.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "mime 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "tempdir 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "toml 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
- "url 0.5.9 (registry+https://github.com/rust-lang/crates.io-index)",
- "yup-hyper-mock 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "toml 0.1.30 (registry+https://github.com/rust-lang/crates.io-index)",
+ "url 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "yup-hyper-mock 1.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -29,7 +29,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "bitflags"
-version = "0.6.0"
+version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -45,7 +45,7 @@ name = "cookie"
 version = "0.2.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "openssl 0.7.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "openssl 0.7.13 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "url 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -56,7 +56,7 @@ name = "docopt"
 version = "0.6.80"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "regex 0.1.69 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex 0.1.71 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "strsim 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -68,10 +68,11 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "gdi32-sys"
-version = "0.1.1"
+version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "winapi 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.2.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -100,7 +101,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "hyper"
-version = "0.9.3"
+version = "0.9.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cookie 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -108,8 +109,9 @@ dependencies = [
  "language-tags 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "mime 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "num_cpus 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "openssl 0.7.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num_cpus 0.2.12 (registry+https://github.com/rust-lang/crates.io-index)",
+ "openssl 0.7.13 (registry+https://github.com/rust-lang/crates.io-index)",
+ "openssl-verify 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "solicit 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -134,7 +136,7 @@ name = "kernel32-sys"
 version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "winapi 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.2.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -163,7 +165,7 @@ dependencies = [
  "libc 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "libssh2-sys 0.1.37 (registry+https://github.com/rust-lang/crates.io-index)",
  "libz-sys 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "openssl-sys 0.7.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "openssl-sys 0.7.13 (registry+https://github.com/rust-lang/crates.io-index)",
  "pkg-config 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -183,7 +185,7 @@ dependencies = [
  "cmake 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "libz-sys 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "openssl-sys 0.7.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "openssl-sys 0.7.13 (registry+https://github.com/rust-lang/crates.io-index)",
  "pkg-config 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -225,7 +227,7 @@ dependencies = [
 
 [[package]]
 name = "num_cpus"
-version = "0.2.11"
+version = "0.2.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "libc 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -233,37 +235,45 @@ dependencies = [
 
 [[package]]
 name = "openssl"
-version = "0.7.11"
+version = "0.7.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "bitflags 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bitflags 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "gcc 0.3.28 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "openssl-sys 0.7.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "openssl-sys-extras 0.7.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "openssl-sys 0.7.13 (registry+https://github.com/rust-lang/crates.io-index)",
+ "openssl-sys-extras 0.7.13 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "openssl-sys"
-version = "0.7.11"
+version = "0.7.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "gdi32-sys 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gdi32-sys 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "libressl-pnacl-sys 2.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "pkg-config 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "user32-sys 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "user32-sys 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "openssl-sys-extras"
-version = "0.7.11"
+version = "0.7.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "gcc 0.3.28 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "openssl-sys 0.7.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "openssl-sys 0.7.13 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "openssl-verify"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "openssl 0.7.13 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -289,19 +299,19 @@ dependencies = [
 
 [[package]]
 name = "regex"
-version = "0.1.69"
+version = "0.1.71"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "aho-corasick 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "memchr 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex-syntax 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex-syntax 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "thread_local 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "utf8-ranges 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "regex-syntax"
-version = "0.3.1"
+version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -368,12 +378,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.2.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "toml"
-version = "0.1.28"
+version = "0.1.30"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -422,18 +432,6 @@ dependencies = [
 
 [[package]]
 name = "url"
-version = "0.5.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "matches 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
- "unicode-bidi 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "unicode-normalization 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "uuid 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "url"
 version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
@@ -443,10 +441,10 @@ dependencies = [
 
 [[package]]
 name = "user32-sys"
-version = "0.1.2"
+version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "winapi 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.2.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -465,16 +463,8 @@ dependencies = [
 ]
 
 [[package]]
-name = "uuid"
-version = "0.2.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "rand 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
 name = "winapi"
-version = "0.2.6"
+version = "0.2.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -484,10 +474,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "yup-hyper-mock"
-version = "1.3.2"
+version = "1.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "hyper 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "hyper 0.9.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
diff --git a/Cargo.toml b/Cargo.toml
index 614abbb..bef3c88 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -26,10 +26,10 @@ license = "GPL-2.0+"
 name = "snowpatch"
 
 [dependencies]
-hyper = "0.9"
+hyper = ">0.9.2" # 0.9.2 or later required for proxy support
 git2 = "0.3"
 rustc-serialize = "0.3"
-url = "0.5"
+url = "1.1"
 mime = "0.2"
 toml = "0.1"
 tempdir = "0.3"
diff --git a/src/jenkins.rs b/src/jenkins.rs
index 4a69ddc..dc22737 100644
--- a/src/jenkins.rs
+++ b/src/jenkins.rs
@@ -55,7 +55,11 @@ impl<'a> CIBackend for JenkinsBackend<'a> {
     fn start_test(&self, job_name: &str, params: Vec<(&str, &str)>)
                   -> Result<String, &'static str> {
         let client = Client::new(); // TODO: do we want to get this from somewhere else?
-        let params = url::form_urlencoded::serialize(params);
+        let mut serializer = url::form_urlencoded::Serializer::new(String::new());
+        for param in params {
+            serializer.append_pair(param.0, param.1);
+        }
+        let params = serializer.finish();
 
         let res = client.post(&format!("{}/job/{}/buildWithParameters?{}", self.base_url, job_name, params)).send().expect("HTTP request error"); // TODO don't panic here
 
