diff --git a/metrics-benchmark/Cargo.toml b/metrics-benchmark/Cargo.toml
index ce75b47..afa07da 100644
--- a/metrics-benchmark/Cargo.toml
+++ b/metrics-benchmark/Cargo.toml
@@ -10,5 +10,5 @@ env_logger = "^0.7"
 getopts = "^0.2"
 hdrhistogram = "^7.0"
 quanta = "^0.5"
-metrics = { version = "^0.13", path = "../metrics" }
-metrics-util = { version = "^0.4", path = "../metrics-util" }
\ No newline at end of file
+metrics = { version = "0.13.0-alpha.0", path = "../metrics" }
+metrics-util = { version = "0.4.0-alpha.0", path = "../metrics-util" }
\ No newline at end of file
diff --git a/metrics-exporter-prometheus/Cargo.toml b/metrics-exporter-prometheus/Cargo.toml
index 27ea6d7..3685724 100644
--- a/metrics-exporter-prometheus/Cargo.toml
+++ b/metrics-exporter-prometheus/Cargo.toml
@@ -16,8 +16,8 @@ categories = ["development-tools::debugging"]
 keywords = ["metrics", "telemetry", "prometheus"]
 
 [dependencies]
-metrics = { version = "^0.13", path = "../metrics" }
-metrics-util = { version = "^0.4", path = "../metrics-util"}
+metrics = { version = "0.13.0-alpha.0", path = "../metrics" }
+metrics-util = { version = "0.4.0-alpha.0", path = "../metrics-util"}
 hdrhistogram = "^7.1"
 hyper = { version = "^0.13", default-features = false, features = ["tcp"] }
 tokio = { version = "^0.2", features = ["rt-core", "tcp", "time", "macros"] }
diff --git a/metrics-exporter-tcp/Cargo.toml b/metrics-exporter-tcp/Cargo.toml
index 69c3687..842968d 100644
--- a/metrics-exporter-tcp/Cargo.toml
+++ b/metrics-exporter-tcp/Cargo.toml
@@ -16,8 +16,8 @@ categories = ["development-tools::debugging"]
 keywords = ["metrics", "telemetry", "tcp"]
 
 [dependencies]
-metrics = { version = "^0.13", path = "../metrics", features = ["std"] }
-metrics-util = { version = "^0.4", path = "../metrics-util" }
+metrics = { version = "0.13.0-alpha.0", path = "../metrics", features = ["std"] }
+metrics-util = { version = "0.4.0-alpha.0", path = "../metrics-util" }
 bytes = "^0.5"
 crossbeam-channel = "^0.4"
 prost = "^0.6"
diff --git a/metrics-util/Cargo.toml b/metrics-util/Cargo.toml
index 3664035..532335a 100644
--- a/metrics-util/Cargo.toml
+++ b/metrics-util/Cargo.toml
@@ -28,7 +28,7 @@ name = "streaming_integers"
 harness = false
 
 [dependencies]
-metrics = { version = "^0.13", path = "../metrics", features = ["std"] }
+metrics = { version = "0.13.0-alpha.0", path = "../metrics", features = ["std"] }
 crossbeam-epoch = "^0.8"
 crossbeam-utils = "^0.7"
 serde = "^1.0"
diff --git a/metrics/Cargo.toml b/metrics/Cargo.toml
index 7f3d289..62fa96e 100644
--- a/metrics/Cargo.toml
+++ b/metrics/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "metrics"
-version = "0.13.0"
+version = "0.13.0-alpha.0"
 authors = ["Toby Lawrence <toby@nuclearfurnace.com>"]
 edition = "2018"