diff --git a/Cargo.lock b/Cargo.lock
index 45c3598405b..46188d1606c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -124,7 +124,7 @@ checksum = "8c3c1a368f70d6cf7302d78f8f7093da241fb8e8807c05cc9e51a125895a6d5b"
 
 [[package]]
 name = "benchsuite"
-version = "0.1.0"
+version = "0.0.0"
 dependencies = [
  "cargo",
  "criterion",
@@ -1990,7 +1990,7 @@ dependencies = [
 
 [[package]]
 name = "mdman"
-version = "0.1.0"
+version = "0.0.0"
 dependencies = [
  "anyhow",
  "handlebars",
@@ -2639,7 +2639,7 @@ dependencies = [
 
 [[package]]
 name = "resolver-tests"
-version = "0.1.0"
+version = "0.0.0"
 dependencies = [
  "cargo",
  "cargo-util",
@@ -2781,7 +2781,7 @@ dependencies = [
 
 [[package]]
 name = "semver-check"
-version = "0.1.0"
+version = "0.0.0"
 dependencies = [
  "tempfile",
 ]
diff --git a/benches/benchsuite/Cargo.toml b/benches/benchsuite/Cargo.toml
index fba6f63cd91..5cd4b2330cd 100644
--- a/benches/benchsuite/Cargo.toml
+++ b/benches/benchsuite/Cargo.toml
@@ -1,11 +1,12 @@
 [package]
 name = "benchsuite"
-version = "0.1.0"
+version = "0.0.0"
 edition = "2021"
 license = "MIT OR Apache-2.0"
 homepage = "https://github.com/rust-lang/cargo"
 repository = "https://github.com/rust-lang/cargo"
 description = "Benchmarking suite for Cargo."
+publish = false
 
 [dependencies]
 cargo = { path = "../.." }
diff --git a/crates/mdman/Cargo.toml b/crates/mdman/Cargo.toml
index 92cdf2eb634..def3cad9d56 100644
--- a/crates/mdman/Cargo.toml
+++ b/crates/mdman/Cargo.toml
@@ -1,9 +1,10 @@
 [package]
 name = "mdman"
-version = "0.1.0"
+version = "0.0.0"
 edition = "2021"
 license = "MIT OR Apache-2.0"
 description = "Creates a man page page from markdown."
+publish = false
 
 [dependencies]
 anyhow = "1.0.31"
diff --git a/crates/resolver-tests/Cargo.toml b/crates/resolver-tests/Cargo.toml
index e4aab4325f7..3de0e945ac3 100644
--- a/crates/resolver-tests/Cargo.toml
+++ b/crates/resolver-tests/Cargo.toml
@@ -1,7 +1,8 @@
 [package]
 name = "resolver-tests"
-version = "0.1.0"
+version = "0.0.0"
 edition = "2018"
+publish = false
 
 [dependencies]
 cargo = { path = "../.." }
diff --git a/crates/semver-check/Cargo.toml b/crates/semver-check/Cargo.toml
index bdfd8d7d7c1..e40b499ee06 100644
--- a/crates/semver-check/Cargo.toml
+++ b/crates/semver-check/Cargo.toml
@@ -1,8 +1,9 @@
 [package]
 name = "semver-check"
-version = "0.1.0"
+version = "0.0.0"
 authors = ["Eric Huss"]
 edition = "2021"
+publish = false
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html