diff --git a/.yarn/versions/fb37557b.yml b/.yarn/versions/fb37557b.yml
new file mode 100644
index 000000000000..20a0069f4eaf
--- /dev/null
+++ b/.yarn/versions/fb37557b.yml
@@ -0,0 +1,34 @@
+releases:
+  "@yarnpkg/cli": major
+  "@yarnpkg/core": major
+
+declined:
+  - "@yarnpkg/plugin-compat"
+  - "@yarnpkg/plugin-constraints"
+  - "@yarnpkg/plugin-dlx"
+  - "@yarnpkg/plugin-essentials"
+  - "@yarnpkg/plugin-exec"
+  - "@yarnpkg/plugin-file"
+  - "@yarnpkg/plugin-git"
+  - "@yarnpkg/plugin-github"
+  - "@yarnpkg/plugin-http"
+  - "@yarnpkg/plugin-init"
+  - "@yarnpkg/plugin-interactive-tools"
+  - "@yarnpkg/plugin-link"
+  - "@yarnpkg/plugin-nm"
+  - "@yarnpkg/plugin-npm"
+  - "@yarnpkg/plugin-npm-cli"
+  - "@yarnpkg/plugin-pack"
+  - "@yarnpkg/plugin-patch"
+  - "@yarnpkg/plugin-pnp"
+  - "@yarnpkg/plugin-pnpm"
+  - "@yarnpkg/plugin-stage"
+  - "@yarnpkg/plugin-typescript"
+  - "@yarnpkg/plugin-version"
+  - "@yarnpkg/plugin-workspace-tools"
+  - "@yarnpkg/builder"
+  - "@yarnpkg/doctor"
+  - "@yarnpkg/extensions"
+  - "@yarnpkg/nm"
+  - "@yarnpkg/pnpify"
+  - "@yarnpkg/sdks"
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 153d30a264a0..9d33f66706f0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -41,6 +41,8 @@ The following changes only affect people writing Yarn plugins:
 
 - `npmConfigUtils.getAuditRegistry` no longer takes a `Manifest` as its first argument.
 
+- `Manifest.isManifestFieldCompatible` and `Manifest.prototype.isCompatibleWith{OS,CPU}` have been removed. Use `Manifest.prototype.getConditions` and `structUtils.isPackageCompatible` instead.
+
 - `versionUtils.{fetchBase,fetchRoot,fetchChangedFiles}` have been moved from `@yarnpkg/plugin-version` to `@yarnpkg/plugin-git`. Use `gitUtils.{fetchBase,fetchRoot,fetchChangedFiles}` instead.
 
 ### Installs
diff --git a/packages/yarnpkg-core/sources/Manifest.ts b/packages/yarnpkg-core/sources/Manifest.ts
index 2e7055e80519..cd67cb05e5f9 100644
--- a/packages/yarnpkg-core/sources/Manifest.ts
+++ b/packages/yarnpkg-core/sources/Manifest.ts
@@ -131,33 +131,6 @@ export class Manifest {
     return manifest;
   }
 
-  static isManifestFieldCompatible(rules: Array<string> | null, actual: string) {
-    if (rules === null)
-      return true;
-
-    let isNotOnAllowlist = true;
-    let isOnDenylist = false;
-
-    for (const rule of rules) {
-      if (rule[0] === `!`) {
-        isOnDenylist = true;
-
-        if (actual === rule.slice(1)) {
-          return false;
-        }
-      } else {
-        isNotOnAllowlist = false;
-
-        if (rule === actual) {
-          return true;
-        }
-      }
-    }
-
-    // Denylists with allowlisted items should be treated as allowlists for `os` and `cpu` in `package.json`
-    return isOnDenylist && isNotOnAllowlist;
-  }
-
   loadFromText(text: string) {
     let data;
     try {
@@ -714,20 +687,6 @@ export class Manifest {
     return fields.length > 0 ? fields.join(` & `) : null;
   }
 
-  /**
-   * @deprecated Prefer getConditions() instead
-   */
-  isCompatibleWithOS(os: string): boolean {
-    return Manifest.isManifestFieldCompatible(this.os, os);
-  }
-
-  /**
-   * @deprecated Prefer getConditions() instead
-   */
-  isCompatibleWithCPU(cpu: string): boolean {
-    return Manifest.isManifestFieldCompatible(this.cpu, cpu);
-  }
-
   ensureDependencyMeta(descriptor: Descriptor) {
     if (descriptor.range !== `unknown` && !semver.valid(descriptor.range))
       throw new Error(`Invalid meta field range for '${structUtils.stringifyDescriptor(descriptor)}'`);