diff --git a/matrix_qrcode/Cargo.toml b/matrix_qrcode/Cargo.toml
index 4e81adc9..43b2ed74 100644
--- a/matrix_qrcode/Cargo.toml
+++ b/matrix_qrcode/Cargo.toml
@@ -8,6 +8,8 @@ homepage = "https://github.com/matrix-org/matrix-rust-sdk"
 keywords = ["matrix", "chat", "messaging", "ruma", "nio"]
 license = "Apache-2.0"
 readme = "README.md"
+# This isn't yet supported by the stable cargo, we'll enable it when it is.
+# rust-version = "1.54"
 repository = "https://github.com/matrix-org/matrix-rust-sdk"
 
 [package.metadata.docs.rs]
diff --git a/matrix_sdk/Cargo.toml b/matrix_sdk/Cargo.toml
index 225411b0..a88d9732 100644
--- a/matrix_sdk/Cargo.toml
+++ b/matrix_sdk/Cargo.toml
@@ -8,6 +8,8 @@ license = "Apache-2.0"
 name = "matrix-sdk"
 readme = "README.md"
 repository = "https://github.com/matrix-org/matrix-rust-sdk"
+# This isn't yet supported by the stable cargo, we'll enable it when it is.
+# rust-version = "1.54"
 version = "0.4.1"
 
 [package.metadata.docs.rs]
diff --git a/matrix_sdk_base/Cargo.toml b/matrix_sdk_base/Cargo.toml
index b5a767bb..f9e75aff 100644
--- a/matrix_sdk_base/Cargo.toml
+++ b/matrix_sdk_base/Cargo.toml
@@ -8,6 +8,8 @@ license = "Apache-2.0"
 name = "matrix-sdk-base"
 readme = "README.md"
 repository = "https://github.com/matrix-org/matrix-rust-sdk"
+# This isn't yet supported by the stable cargo, we'll enable it when it is.
+# rust-version = "1.54"
 version = "0.4.1"
 
 [package.metadata.docs.rs]
diff --git a/matrix_sdk_common/Cargo.toml b/matrix_sdk_common/Cargo.toml
index 5031dbed..7894cd45 100644
--- a/matrix_sdk_common/Cargo.toml
+++ b/matrix_sdk_common/Cargo.toml
@@ -8,6 +8,8 @@ license = "Apache-2.0"
 name = "matrix-sdk-common"
 readme = "README.md"
 repository = "https://github.com/matrix-org/matrix-rust-sdk"
+# This isn't yet supported by the stable cargo, we'll enable it when it is.
+# rust-version = "1.54"
 version = "0.4.1"
 
 [dependencies]
diff --git a/matrix_sdk_crypto/Cargo.toml b/matrix_sdk_crypto/Cargo.toml
index ca9520c9..b8c12012 100644
--- a/matrix_sdk_crypto/Cargo.toml
+++ b/matrix_sdk_crypto/Cargo.toml
@@ -8,6 +8,8 @@ license = "Apache-2.0"
 name = "matrix-sdk-crypto"
 readme = "README.md"
 repository = "https://github.com/matrix-org/matrix-rust-sdk"
+# This isn't yet supported by the stable cargo, we'll enable it when it is.
+# rust-version = "1.54"
 version = "0.4.1"
 
 [package.metadata.docs.rs]
diff --git a/matrix_sdk_test/Cargo.toml b/matrix_sdk_test/Cargo.toml
index b24eed59..6affc98d 100644
--- a/matrix_sdk_test/Cargo.toml
+++ b/matrix_sdk_test/Cargo.toml
@@ -8,6 +8,8 @@ license = "Apache-2.0"
 name = "matrix-sdk-test"
 readme = "README.md"
 repository = "https://github.com/matrix-org/matrix-rust-sdk"
+# This isn't yet supported by the stable cargo, we'll enable it when it is.
+# rust-version = "1.54"
 version = "0.4.0"
 
 [features]
diff --git a/matrix_sdk_test_macros/Cargo.toml b/matrix_sdk_test_macros/Cargo.toml
index 11a42bdc..d6d30060 100644
--- a/matrix_sdk_test_macros/Cargo.toml
+++ b/matrix_sdk_test_macros/Cargo.toml
@@ -8,6 +8,8 @@ license = "Apache-2.0"
 name = "matrix-sdk-test-macros"
 readme = "README.md"
 repository = "https://github.com/matrix-org/matrix-rust-sdk"
+# This isn't yet supported by the stable cargo, we'll enable it when it is.
+# rust-version = "1.54"
 version = "0.1.0"
 
 [lib]