diff --git a/crates/sel4-async/network/rustls/utils/Cargo.toml b/crates/sel4-async/network/rustls/utils/Cargo.toml
index 80bda85c5..4a08abf0d 100644
--- a/crates/sel4-async/network/rustls/utils/Cargo.toml
+++ b/crates/sel4-async/network/rustls/utils/Cargo.toml
@@ -19,7 +19,7 @@ license = "BSD-2-Clause"
 [dependencies]
 getrandom = { version = "0.2.10", features = ["custom"] }
 rand = { version = "0.8.5", default-features = false, features = ["small_rng"] }
-ring = { version = "0.17.7", features = ["less-safe-getrandom-custom-or-rdrand"] }
+ring = { version = "=0.17.7", features = ["less-safe-getrandom-custom-or-rdrand"] }
 sel4-async-time = { path = "../../../time" }
 
 [dependencies.rustls]
diff --git a/hacking/cargo-manifest-management/manifest-scope.nix b/hacking/cargo-manifest-management/manifest-scope.nix
index 11d334ff0..412aa85d1 100644
--- a/hacking/cargo-manifest-management/manifest-scope.nix
+++ b/hacking/cargo-manifest-management/manifest-scope.nix
@@ -186,7 +186,7 @@ in rec {
   };
 
   ringWith = features: {
-    version = "0.17.7";
+    version = "=0.17.7";
     features = [ "less-safe-getrandom-custom-or-rdrand" ] ++ features;
   };
 
diff --git a/hacking/nix/scope/world/instances/default.nix b/hacking/nix/scope/world/instances/default.nix
index 581c741d4..559e0af36 100644
--- a/hacking/nix/scope/world/instances/default.nix
+++ b/hacking/nix/scope/world/instances/default.nix
@@ -78,8 +78,9 @@ in rec {
     tests.root-task.panicking.byConfig.abort.withoutAlloc
     tests.root-task.panicking.byConfig.unwind.withAlloc
     tests.root-task.panicking.byConfig.unwind.withoutAlloc
-    tests.root-task.default-test-harness
     tests.root-task.c
+    tests.root-task.default-test-harness
+    # tests.root-task.ring
     tests.capdl.threads
     tests.capdl.utcover
     microkit.examples.hello
@@ -212,7 +213,7 @@ in rec {
         };
       });
 
-      ring = maybe (haveFullRuntime && haveUnwindingSupport) (
+      ring = maybe (haveFullRuntime && haveUnwindingSupport && !hostPlatform.isRiscV32) (
         let
           rootTask = lib.makeOverridable mkTask {
             rootCrate = crates.ring;
@@ -256,7 +257,7 @@ in rec {
         in {
           inherit byElf;
 
-          all = mkRunTests "run-all-ring-test" (lib.flip lib.mapAttrsToList byElf (k: v: lib.nameValuePair k v.automate));
+          automate = mkRunTests "run-all-ring-test" (lib.flip lib.mapAttrsToList byElf (k: v: lib.nameValuePair k v.automate));
         }
       );