diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index b5ce735..e8f811e 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -69,25 +69,26 @@ jobs:
       run: |
         sudo apt-get update
 
-    - name: Install Main Toolchain
-      uses: actions-rs/toolchain@v1
-      with:
-        toolchain: stable
-        target: ${{ matrix.target }}
-        profile: minimal
-        components: clippy
-        override: true
+    - name: Install Rust Toolchain
+      run: |
+        rustup component add clippy
+        rustup target add ${{ matrix.target }}
+        rustup default `cat rust-toolchain`-${{ matrix.target }}
 
     - name: Install AArch64 Toolchain
       if: matrix.target == 'aarch64-unknown-linux-gnu'
       run: sudo apt-get install gcc-aarch64-linux-gnu
 
-    - name: Version
+    - name: Info
       run: |
         rustup --version
         cargo --version
         cargo clippy --version
 
+    - name: Check Lockfile
+      run: |
+        cargo update --locked --package just
+
     - name: Build
       run: cargo build --all --target ${{ matrix.target }}
 
@@ -144,12 +145,16 @@ jobs:
       run: ./bin/package ${{github.ref}} ${{matrix.os}} ${{ matrix.target }}
       shell: bash
 
+    - name: Prerelease Check
+      id: is_prerelease
+      run: cargo run --package prerelease -- --reference ${{ github.ref }}
+
     - name: Publish
-      uses: softprops/action-gh-release@v1
+      uses: softprops/action-gh-release@v0.1.5
       if: startsWith(github.ref, 'refs/tags/')
       with:
         draft: false
         files: ${{ steps.package.outputs.archive }}
-        prerelease: ${{ ! startsWith(github.ref, 'refs/tags/v') }}
+        prerelease: ${{ steps.is_prerelease.outputs.value }}
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/Cargo.lock b/Cargo.lock
index 88812b2..24b98b4 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -266,6 +266,15 @@ version = "0.2.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ac74c624d6b2d21f425f752262f42188365d7b8ff1aff74c82e45136510a4857"
 
+[[package]]
+name = "prerelease"
+version = "0.0.0"
+dependencies = [
+ "executable-path",
+ "regex",
+ "structopt",
+]
+
 [[package]]
 name = "pretty_assertions"
 version = "0.7.2"
@@ -278,6 +287,30 @@ dependencies = [
  "output_vt100",
 ]
 
+[[package]]
+name = "proc-macro-error"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "da25490ff9892aab3fcf7c36f08cfb902dd3e71ca0f9f9517bea02a73a5ce38c"
+dependencies = [
+ "proc-macro-error-attr",
+ "proc-macro2",
+ "quote",
+ "syn",
+ "version_check",
+]
+
+[[package]]
+name = "proc-macro-error-attr"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a1be40180e52ecc98ad80b184934baf3d0d29f979574e439af5a55274b35f869"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "version_check",
+]
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.27"
@@ -398,6 +431,30 @@ version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
 
+[[package]]
+name = "structopt"
+version = "0.3.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5277acd7ee46e63e5168a80734c9f6ee81b1367a7d8772a2d765df2a3705d28c"
+dependencies = [
+ "clap",
+ "lazy_static",
+ "structopt-derive",
+]
+
+[[package]]
+name = "structopt-derive"
+version = "0.4.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5ba9cdfda491b814720b6b06e0cac513d922fc407582032e8706e9f137976f90"
+dependencies = [
+ "heck",
+ "proc-macro-error",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "strum"
 version = "0.20.0"
@@ -463,6 +520,7 @@ dependencies = [
 name = "test-utilities"
 version = "0.0.0"
 dependencies = [
+ "just",
  "tempfile",
 ]
 
@@ -499,6 +557,12 @@ version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f1bddf1187be692e79c5ffeab891132dfb0f236ed36a43c7ed39f1165ee20191"
 
+[[package]]
+name = "version_check"
+version = "0.9.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5fecdca9a5291cc2b8dcf7dc02453fee791a280f3743cb0905f8822ae463b3fe"
+
 [[package]]
 name = "wasi"
 version = "0.10.2+wasi-snapshot-preview1"
diff --git a/Cargo.toml b/Cargo.toml
index dbb5e22..0612ac5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,6 +12,9 @@ autotests   = false
 categories  = ["command-line-utilities", "development-tools"]
 keywords    = ["command-line", "task", "runner", "development", "utility"]
 
+[workspace]
+members = [".", "bin/prerelease"]
+
 [dependencies]
 ansi_term     = "0.12.0"
 atty          = "0.2.0"
diff --git a/bin/prerelease/Cargo.toml b/bin/prerelease/Cargo.toml
new file mode 100644
index 0000000..eb2960a
--- /dev/null
+++ b/bin/prerelease/Cargo.toml
@@ -0,0 +1,13 @@
+[package]
+name = "prerelease"
+version = "0.0.0"
+authors = ["Casey Rodarmor <casey@rodarmor.com>"]
+edition = "2018"
+publish = false
+
+[dependencies]
+regex = "1.5.4"
+structopt = "0.3.21"
+
+[dev-dependencies]
+executable-path = "1.0.0"
diff --git a/bin/prerelease/src/main.rs b/bin/prerelease/src/main.rs
new file mode 100644
index 0000000..c0d1b41
--- /dev/null
+++ b/bin/prerelease/src/main.rs
@@ -0,0 +1,20 @@
+use regex::Regex;
+use structopt::StructOpt;
+
+#[derive(StructOpt)]
+struct Arguments {
+  #[structopt(long)]
+  reference: String,
+}
+
+fn main() {
+  let arguments = Arguments::from_args();
+
+  let regex = Regex::new("^refs/tags/[[:digit:]]+[.][[:digit:]]+[.][[:digit:]]+$")
+    .expect("Failed to compile release regex");
+
+  println!(
+    "::set-output name=value::{}",
+    !regex.is_match(&arguments.reference)
+  );
+}
diff --git a/bin/prerelease/tests/integration.rs b/bin/prerelease/tests/integration.rs
new file mode 100644
index 0000000..54a13dd
--- /dev/null
+++ b/bin/prerelease/tests/integration.rs
@@ -0,0 +1,42 @@
+use executable_path::executable_path;
+use std::{process::Command, str};
+
+fn stdout(reference: &str) -> String {
+  let output = Command::new(executable_path("prerelease"))
+    .args(&["--reference", reference])
+    .output()
+    .unwrap();
+
+  assert!(output.status.success());
+
+  String::from_utf8(output.stdout).unwrap()
+}
+
+#[test]
+fn junk_is_prerelease() {
+  assert_eq!(stdout("refs/tags/asdf"), "::set-output name=value::true\n");
+}
+
+#[test]
+fn valid_version_is_not_prerelease() {
+  assert_eq!(
+    stdout("refs/tags/0.0.0"),
+    "::set-output name=value::false\n"
+  );
+}
+
+#[test]
+fn valid_version_with_trailing_characters_is_prerelease() {
+  assert_eq!(
+    stdout("refs/tags/0.0.0-rc1"),
+    "::set-output name=value::true\n"
+  );
+}
+
+#[test]
+fn valid_version_with_lots_of_digits_is_not_prerelease() {
+  assert_eq!(
+    stdout("refs/tags/01232132.098327498374.43268473849734"),
+    "::set-output name=value::false\n"
+  );
+}
diff --git a/justfile b/justfile
index 8b9e69a..03e5299 100755
--- a/justfile
+++ b/justfile
@@ -55,7 +55,7 @@ man:
 view-man: man
 	man man/just.1
 
-version := `sed -En 's/version[[:space:]]*=[[:space:]]*"([^"]+)"/v\1/p' Cargo.toml | head -1`
+version := `sed -En 's/version[[:space:]]*=[[:space:]]*"([^"]+)"/\1/p' Cargo.toml | head -1`
 
 # add git log messages to changelog
 changes:
diff --git a/rust-toolchain b/rust-toolchain
new file mode 100644
index 0000000..154cb93
--- /dev/null
+++ b/rust-toolchain
@@ -0,0 +1 @@
+1.52.1
diff --git a/src/config.rs b/src/config.rs
index 60ce17b..883350f 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -310,7 +310,7 @@ impl Config {
       ))
     } else {
       app
-        .version(concat!("v", env!("CARGO_PKG_VERSION")))
+        .version(env!("CARGO_PKG_VERSION"))
         .author(env!("CARGO_PKG_AUTHORS"))
         .about(concat!(
           env!("CARGO_PKG_DESCRIPTION"),
@@ -900,7 +900,7 @@ mod tests {
   // have proper tests for all the flags, but this will do for now.
   #[test]
   fn help() {
-    const EXPECTED_HELP: &str = "just v0.9.4
+    const EXPECTED_HELP: &str = "just 0.9.4
 Casey Rodarmor <casey@rodarmor.com>
 🤖 Just a command runner \
                                  - https://github.com/casey/just
diff --git a/test-utilities/Cargo.toml b/test-utilities/Cargo.toml
index aa92a1d..90971de 100644
--- a/test-utilities/Cargo.toml
+++ b/test-utilities/Cargo.toml
@@ -7,3 +7,4 @@ publish = false
 
 [dependencies]
 tempfile = "3"
+just = { path = ".." }
diff --git a/test-utilities/src/lib.rs b/test-utilities/src/lib.rs
index 88f2a0e..414cae1 100644
--- a/test-utilities/src/lib.rs
+++ b/test-utilities/src/lib.rs
@@ -123,39 +123,6 @@ macro_rules! tmptree {
 mod tests {
   use super::*;
 
-  #[test]
-  fn unindents() {
-    assert_eq!(unindent("foo"), "foo");
-    assert_eq!(unindent("foo\nbar\nbaz\n"), "foo\nbar\nbaz\n");
-    assert_eq!(unindent(""), "");
-    assert_eq!(unindent("  foo\n  bar"), "foo\nbar");
-    assert_eq!(unindent("  foo\n  bar\n\n"), "foo\nbar\n");
-  }
-
-  #[test]
-  fn indentations() {
-    assert_eq!(indentation(""), "");
-    assert_eq!(indentation("foo"), "");
-    assert_eq!(indentation("   foo"), "   ");
-    assert_eq!(indentation("\t\tfoo"), "\t\t");
-    assert_eq!(indentation("\t \t foo"), "\t \t ");
-  }
-
-  #[test]
-  fn blanks() {
-    assert!(blank("       \n"));
-    assert!(!blank("       foo\n"));
-    assert!(blank("\t\t\n"));
-  }
-
-  #[test]
-  fn commons() {
-    assert_eq!(common("foo", "foobar"), "foo");
-    assert_eq!(common("foo", "bar"), "");
-    assert_eq!(common("", ""), "");
-    assert_eq!(common("", "bar"), "");
-  }
-
   #[test]
   fn tmptree_file() {
     let tmpdir = tmptree! {