diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f0f6388e..907279eb 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -82,19 +82,16 @@ jobs:
   #         MIRIFLAGS: -Zmiri-disable-isolation -Zmiri-strict-provenance
   #       run: cargo miri test --all --verbose
 
-  # TODO: Re-enable when we're ready to start releasing crates. It doesn't
-  # matter for orogene itself, but sub-crates *should* have this check done.
-  #
-  # minimal_versions: name: Minimal versions check runs-on: ${{ matrix.os }}
-  #   strategy: matrix: os: [ubuntu-latest, macOS-latest, windows-latest]
+  minimal_versions: name: Minimal versions check runs-on: ${{ matrix.os }}
+    strategy: matrix: os: [ubuntu-latest, macOS-latest, windows-latest]
 
-  #   steps:
-  #     - uses: actions/checkout@v1
-  #     - name: Install Rust
-  #       uses: actions-rs/toolchain@v1
-  #       with:
-  #         profile: minimal
-  #         toolchain: nightly
-  #         override: true
-  #     - name: Run minimal version build
-  #       run: cargo build -Z minimal-versions --all-features
+    steps:
+      - uses: actions/checkout@v1
+      - name: Install Rust
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: nightly
+          override: true
+      - name: Run minimal version build
+        run: cargo build --all -Z minimal-versions --all-features
diff --git a/crates/nassun/Cargo.toml b/crates/nassun/Cargo.toml
index 8545348f..db985638 100644
--- a/crates/nassun/Cargo.toml
+++ b/crates/nassun/Cargo.toml
@@ -8,6 +8,7 @@ license = "Apache-2.0"
 repository = "https://github.com/orogene/orogene"
 homepage = "https://github.com/orogene/orogene"
 readme = "README.md"
+rust-version = "1.67.1"
 
 [dependencies]
 oro-common = { version = "=0.3.15", path = "../oro-common" }
diff --git a/crates/node-maintainer/Cargo.toml b/crates/node-maintainer/Cargo.toml
index 3e885d40..f90ef07d 100644
--- a/crates/node-maintainer/Cargo.toml
+++ b/crates/node-maintainer/Cargo.toml
@@ -8,6 +8,7 @@ license = "Apache-2.0"
 repository = "https://github.com/orogene/orogene"
 homepage = "https://github.com/orogene/orogene"
 readme = "README.md"
+rust-version = "1.67.1"
 
 [dependencies]
 nassun = { version = "=0.3.15", path = "../nassun" }
diff --git a/crates/oro-client/Cargo.toml b/crates/oro-client/Cargo.toml
index 528f3760..567a4706 100644
--- a/crates/oro-client/Cargo.toml
+++ b/crates/oro-client/Cargo.toml
@@ -8,7 +8,7 @@ license = "Apache-2.0"
 repository = "https://github.com/orogene/orogene"
 homepage = "https://github.com/orogene/orogene"
 readme = "README.md"
-
+rust-version = "1.67.1"
 
 [dependencies]
 oro-common = { version = "=0.3.15", path = "../oro-common" }
diff --git a/crates/oro-common/Cargo.toml b/crates/oro-common/Cargo.toml
index 7211208e..9d51e6e0 100644
--- a/crates/oro-common/Cargo.toml
+++ b/crates/oro-common/Cargo.toml
@@ -8,6 +8,7 @@ license = "Apache-2.0"
 repository = "https://github.com/orogene/orogene"
 homepage = "https://github.com/orogene/orogene"
 readme = "README.md"
+rust-version = "1.67.1"
 
 [dependencies]
 derive_builder = { workspace = true }
diff --git a/crates/oro-config-derive/Cargo.toml b/crates/oro-config-derive/Cargo.toml
index 23478959..2b61b2fd 100644
--- a/crates/oro-config-derive/Cargo.toml
+++ b/crates/oro-config-derive/Cargo.toml
@@ -8,6 +8,7 @@ license = "Apache-2.0"
 repository = "https://github.com/orogene/orogene"
 homepage = "https://github.com/orogene/orogene"
 readme = "README.md"
+rust-version = "1.67.1"
 
 [lib]
 path = "src/lib.rs"
diff --git a/crates/oro-config/Cargo.toml b/crates/oro-config/Cargo.toml
index 3893b5e0..106813cb 100644
--- a/crates/oro-config/Cargo.toml
+++ b/crates/oro-config/Cargo.toml
@@ -8,6 +8,7 @@ license = "Apache-2.0"
 repository = "https://github.com/orogene/orogene"
 homepage = "https://github.com/orogene/orogene"
 readme = "README.md"
+rust-version = "1.67.1"
 
 [dependencies]
 oro-config-derive = { version = "=0.3.15", path = "../oro-config-derive" }
diff --git a/crates/oro-package-spec/Cargo.toml b/crates/oro-package-spec/Cargo.toml
index 20fae404..7e7c55f1 100644
--- a/crates/oro-package-spec/Cargo.toml
+++ b/crates/oro-package-spec/Cargo.toml
@@ -8,6 +8,7 @@ license = "Apache-2.0"
 repository = "https://github.com/orogene/orogene"
 homepage = "https://github.com/orogene/orogene"
 readme = "README.md"
+rust-version = "1.67.1"
 
 [dependencies]
 bytecount = { workspace = true }
diff --git a/crates/oro-script/Cargo.toml b/crates/oro-script/Cargo.toml
index 3efbfdbf..7fb01c7d 100644
--- a/crates/oro-script/Cargo.toml
+++ b/crates/oro-script/Cargo.toml
@@ -8,6 +8,7 @@ license = "Apache-2.0"
 repository = "https://github.com/orogene/orogene"
 homepage = "https://github.com/orogene/orogene"
 readme = "README.md"
+rust-version = "1.67.1"
 
 [dependencies]
 oro-common = { version = "=0.3.15", path = "../oro-common" }
diff --git a/crates/oro-shim-bin/Cargo.toml b/crates/oro-shim-bin/Cargo.toml
index 4ec033bd..914cf44f 100644
--- a/crates/oro-shim-bin/Cargo.toml
+++ b/crates/oro-shim-bin/Cargo.toml
@@ -8,6 +8,7 @@ license = "ISC"
 repository = "https://github.com/orogene/orogene"
 homepage = "https://github.com/orogene/orogene"
 readme = "README.md"
+rust-version = "1.67.1"
 
 [dependencies]
 once_cell = { workspace = true }