diff --git a/README.rst b/README.rst
index 2900a59b..21fa7e69 100644
--- a/README.rst
+++ b/README.rst
@@ -70,7 +70,7 @@ your application directory, with options set so that it can find the Zephyr supp
 that the output will be contained within the Zephyr build directory.
 
 The :file:`Cargo.toml` will need to have a ``[lib]`` section that sets ``crate-type =
-["staticlib"]``, and will need to include ``zephyr = "3.7.0"`` as a dependency.  You can use
+["staticlib"]``, and will need to include ``zephyr = "0.1.0"`` as a dependency.  You can use
 crates.io and the Crate ecosystem to include any other dependencies you need.  Just make sure that
 you use crates that support building with no-std.
 
@@ -115,7 +115,7 @@ To your ``Cargo.toml`` file, add the following:
 .. code-block:: toml
 
    [build-dependencies]
-   zephyr-build = "3.7.0"
+   zephyr-build = "0.1.0"
 
 Then, you will need a ``build.rs`` file to call the support function.  The following will work:
 
diff --git a/docgen/Cargo.toml b/docgen/Cargo.toml
index 5588550d..3e384c26 100644
--- a/docgen/Cargo.toml
+++ b/docgen/Cargo.toml
@@ -4,7 +4,7 @@
 [package]
 # This must be rustapp for now.
 name = "rustapp"
-version = "3.7.0"
+version = "0.1.0"
 edition = "2021"
 description = "A small application to generate documentation"
 license = "Apache-2.0 or MIT"
@@ -13,4 +13,4 @@ license = "Apache-2.0 or MIT"
 crate-type = ["staticlib"]
 
 [dependencies]
-zephyr = "3.7.0"
+zephyr = "0.1.0"
diff --git a/samples/hello_world/Cargo.toml b/samples/hello_world/Cargo.toml
index 09c1eada..d75b920e 100644
--- a/samples/hello_world/Cargo.toml
+++ b/samples/hello_world/Cargo.toml
@@ -4,7 +4,7 @@
 [package]
 # This must be rustapp for now.
 name = "rustapp"
-version = "3.7.0"
+version = "0.1.0"
 edition = "2021"
 description = "A sample hello world application in Rust"
 license = "Apache-2.0 or MIT"
@@ -13,5 +13,5 @@ license = "Apache-2.0 or MIT"
 crate-type = ["staticlib"]
 
 [dependencies]
-zephyr = "3.7.0"
+zephyr = "0.1.0"
 log = "0.4.22"
diff --git a/samples/philosophers/Cargo.toml b/samples/philosophers/Cargo.toml
index bb0cdf30..af2dcd45 100644
--- a/samples/philosophers/Cargo.toml
+++ b/samples/philosophers/Cargo.toml
@@ -4,7 +4,7 @@
 [package]
 # This must be rustapp for now.
 name = "rustapp"
-version = "3.7.0"
+version = "0.1.0"
 edition = "2021"
 description = "A sample hello world application in Rust"
 license = "Apache-2.0 or MIT"
@@ -13,11 +13,11 @@ license = "Apache-2.0 or MIT"
 crate-type = ["staticlib"]
 
 [dependencies]
-zephyr = "3.7.0"
+zephyr = "0.1.0"
 
 # Dependencies that are used by build.rs.
 [build-dependencies]
-zephyr-build = "3.7.0"
+zephyr-build = "0.1.0"
 
 [profile.release]
 debug-assertions = true
diff --git a/tests/time/Cargo.toml b/tests/time/Cargo.toml
index ffcba92b..360788e3 100644
--- a/tests/time/Cargo.toml
+++ b/tests/time/Cargo.toml
@@ -4,7 +4,7 @@
 [package]
 # This must be rustapp for now.
 name = "rustapp"
-version = "3.7.0"
+version = "0.1.0"
 edition = "2021"
 description = "Tests of time"
 license = "Apache-2.0 or MIT"
@@ -13,4 +13,4 @@ license = "Apache-2.0 or MIT"
 crate-type = ["staticlib"]
 
 [dependencies]
-zephyr = "3.7.0"
+zephyr = "0.1.0"
diff --git a/tests/timer/Cargo.toml b/tests/timer/Cargo.toml
index 52edcd20..3bfe0fc0 100644
--- a/tests/timer/Cargo.toml
+++ b/tests/timer/Cargo.toml
@@ -4,7 +4,7 @@
 [package]
 # This must be rustapp for now.
 name = "rustapp"
-version = "3.7.0"
+version = "0.1.0"
 edition = "2021"
 description = "Tests of timeers"
 license = "Apache-2.0 or MIT"
@@ -15,4 +15,4 @@ crate-type = ["staticlib"]
 [dependencies]
 rand = { version = "0.8", default-features = false }
 rand_pcg = { version = "0.3.1", default-features = false }
-zephyr = "3.7.0"
+zephyr = "0.1.0"
diff --git a/zephyr-build/Cargo.toml b/zephyr-build/Cargo.toml
index a31eaa8e..c73a95e6 100644
--- a/zephyr-build/Cargo.toml
+++ b/zephyr-build/Cargo.toml
@@ -3,7 +3,7 @@
 
 [package]
 name = "zephyr-build"
-version = "3.7.0"
+version = "0.1.0"
 edition = "2021"
 description = """
 Build-time support for Rust-based applications that run on Zephyr.
diff --git a/zephyr-sys/Cargo.toml b/zephyr-sys/Cargo.toml
index 385dcd5f..62e2256d 100644
--- a/zephyr-sys/Cargo.toml
+++ b/zephyr-sys/Cargo.toml
@@ -3,7 +3,7 @@
 
 [package]
 name = "zephyr-sys"
-version = "3.7.0"
+version = "0.1.0"
 edition = "2021"
 description = """
 Zephyr low-level API bindings.
@@ -15,4 +15,4 @@ Zephyr low-level API bindings.
 [build-dependencies]
 anyhow = "1.0"
 bindgen = { version = "0.69.4", features = ["experimental"] }
-# zephyr-build = { version = "3.7.0", path = "../zephyr-build" }
+# zephyr-build = { version = "0.1.0", path = "../zephyr-build" }
diff --git a/zephyr/Cargo.toml b/zephyr/Cargo.toml
index ad9da71b..15d183c4 100644
--- a/zephyr/Cargo.toml
+++ b/zephyr/Cargo.toml
@@ -3,14 +3,14 @@
 
 [package]
 name = "zephyr"
-version = "3.7.0"
+version = "0.1.0"
 edition = "2021"
 description = """
 Functionality for Rust-based applications that run on Zephyr.
 """
 
 [dependencies]
-zephyr-sys = { version = "3.7.0", path = "../zephyr-sys" }
+zephyr-sys = { version = "0.1.0", path = "../zephyr-sys" }
 
 # Although paste is brought in, it is a compile-time macro, and is not linked into the application.
 paste = "1.0"
@@ -48,4 +48,4 @@ features = ["alloc"]
 # Whether these need to be vendored is an open question.  They are not
 # used by the core Zephyr tree, but are needed by zephyr applications.
 [build-dependencies]
-zephyr-build = { version = "3.7.0", path = "../zephyr-build" }
+zephyr-build = { version = "0.1.0", path = "../zephyr-build" }