diff --git a/Cargo.lock b/Cargo.lock
index 1823b3f27..eb26414d0 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -618,7 +618,7 @@ dependencies = [
 
 [[package]]
 name = "beacon_node"
-version = "4.0.0"
+version = "4.0.1-rc.0"
 dependencies = [
  "beacon_chain",
  "clap",
@@ -786,7 +786,7 @@ dependencies = [
 
 [[package]]
 name = "boot_node"
-version = "4.0.0"
+version = "4.0.1-rc.0"
 dependencies = [
  "beacon_node",
  "clap",
@@ -3770,7 +3770,7 @@ checksum = "830d08ce1d1d941e6b30645f1a0eb5643013d835ce3779a5fc208261dbe10f55"
 
 [[package]]
 name = "lcli"
-version = "4.0.0"
+version = "4.0.1-rc.0"
 dependencies = [
  "account_utils",
  "beacon_chain",
@@ -4374,7 +4374,7 @@ dependencies = [
 
 [[package]]
 name = "lighthouse"
-version = "4.0.0"
+version = "4.0.1-rc.0"
 dependencies = [
  "account_manager",
  "account_utils",
diff --git a/beacon_node/Cargo.toml b/beacon_node/Cargo.toml
index a281599a0..fed3b96ca 100644
--- a/beacon_node/Cargo.toml
+++ b/beacon_node/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "beacon_node"
-version = "4.0.0"
+version = "4.0.1-rc.0"
 authors = ["Paul Hauner <paul@paulhauner.com>", "Age Manning <Age@AgeManning.com"]
 edition = "2021"
 
diff --git a/boot_node/Cargo.toml b/boot_node/Cargo.toml
index 7182bd54d..b18d38ccd 100644
--- a/boot_node/Cargo.toml
+++ b/boot_node/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "boot_node"
-version = "4.0.0"
+version = "4.0.1-rc.0"
 authors = ["Sigma Prime <contact@sigmaprime.io>"]
 edition = "2021"
 
diff --git a/common/lighthouse_version/src/lib.rs b/common/lighthouse_version/src/lib.rs
index c81b632e8..f4e19e796 100644
--- a/common/lighthouse_version/src/lib.rs
+++ b/common/lighthouse_version/src/lib.rs
@@ -17,8 +17,8 @@ pub const VERSION: &str = git_version!(
         // NOTE: using --match instead of --exclude for compatibility with old Git
         "--match=thiswillnevermatchlol"
     ],
-    prefix = "Lighthouse/v4.0.0-",
-    fallback = "Lighthouse/v4.0.0"
+    prefix = "Lighthouse/v4.0.1-rc.0-",
+    fallback = "Lighthouse/v4.0.1-rc.0"
 );
 
 /// Returns `VERSION`, but with platform information appended to the end.
diff --git a/lcli/Cargo.toml b/lcli/Cargo.toml
index 4a8f20e74..84b66c37d 100644
--- a/lcli/Cargo.toml
+++ b/lcli/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "lcli"
 description = "Lighthouse CLI (modeled after zcli)"
-version = "4.0.0"
+version = "4.0.1-rc.0"
 authors = ["Paul Hauner <paul@paulhauner.com>"]
 edition = "2021"
 
diff --git a/lighthouse/Cargo.toml b/lighthouse/Cargo.toml
index ec40d5dbc..143ca86c3 100644
--- a/lighthouse/Cargo.toml
+++ b/lighthouse/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "lighthouse"
-version = "4.0.0"
+version = "4.0.1-rc.0"
 authors = ["Sigma Prime <contact@sigmaprime.io>"]
 edition = "2021"
 autotests = false