diff --git a/apps/event-worker/package.json b/apps/event-worker/package.json
index 9be882694..2ca80c12c 100644
--- a/apps/event-worker/package.json
+++ b/apps/event-worker/package.json
@@ -20,6 +20,7 @@
     "@ctrlplane/db": "workspace:*",
     "@ctrlplane/job-dispatch": "workspace:*",
     "@ctrlplane/logger": "workspace:*",
+    "@ctrlplane/release-manager": "workspace:*",
     "@ctrlplane/rule-engine": "workspace:*",
     "@ctrlplane/validators": "workspace:*",
     "@google-cloud/compute": "^4.9.0",
diff --git a/apps/event-worker/src/releases/evaluate/index.ts b/apps/event-worker/src/releases/evaluate/index.ts
index db42e5bb5..f62636c8b 100644
--- a/apps/event-worker/src/releases/evaluate/index.ts
+++ b/apps/event-worker/src/releases/evaluate/index.ts
@@ -1,9 +1,9 @@
+import type { Policy } from "@ctrlplane/rule-engine";
 import type { ReleaseEvaluateEvent } from "@ctrlplane/validators/events";
 import { Worker } from "bullmq";
-import _ from "lodash";
 
 import { db } from "@ctrlplane/db/client";
-import { evaluate } from "@ctrlplane/rule-engine";
+import { evaluate, getReleases } from "@ctrlplane/rule-engine";
 import { createCtx, getApplicablePolicies } from "@ctrlplane/rule-engine/db";
 import { Channel } from "@ctrlplane/validators/events";
 
@@ -31,14 +31,15 @@ export const createReleaseEvaluateWorker = () =>
 
         const { workspaceId } = ctx.resource;
         const policy = await getApplicablePolicies(db, workspaceId, job.data);
+        const getReleasesWithContext = (policy: Policy) =>
+          getReleases(db, ctx, policy);
 
-        // TODO: Get the releases from the database. We will want to apply a
-        // prefix if one exists (a deployment version channel selector). For now
-        // just return releases from the latest deployed release to the current
-        // version. We need to account for upgrades and downgrades.
-
-        const result = await evaluate(policy, [], ctx);
+        const result = await evaluate(policy, getReleasesWithContext, ctx);
         console.log(result);
+      } catch (error) {
+        const message =
+          error instanceof Error ? error.message : "Unknown error";
+        job.log(`Error evaluating release: ${message}`);
       } finally {
         await mutex.unlock();
       }
diff --git a/packages/db/src/schema/policy-relations.ts b/packages/db/src/schema/policy-relations.ts
index ad414cf5a..c910540ac 100644
--- a/packages/db/src/schema/policy-relations.ts
+++ b/packages/db/src/schema/policy-relations.ts
@@ -1,6 +1,11 @@
 import { relations } from "drizzle-orm";
 
-import { policy, policyRuleDenyWindow, policyTarget } from "./policy.js";
+import {
+  policy,
+  policyDeploymentVersionSelector,
+  policyRuleDenyWindow,
+  policyTarget,
+} from "./policy.js";
 import { workspace } from "./workspace.js";
 
 export const policyRelations = relations(policy, ({ many, one }) => ({
@@ -10,6 +15,10 @@ export const policyRelations = relations(policy, ({ many, one }) => ({
   }),
   targets: many(policyTarget),
   denyWindows: many(policyRuleDenyWindow),
+  deploymentVersionSelector: one(policyDeploymentVersionSelector, {
+    fields: [policy.id],
+    references: [policyDeploymentVersionSelector.policyId],
+  }),
 }));
 
 export const policyTargetRelations = relations(policyTarget, ({ one }) => ({
diff --git a/packages/db/src/schema/policy.ts b/packages/db/src/schema/policy.ts
index 782396e4f..546343a20 100644
--- a/packages/db/src/schema/policy.ts
+++ b/packages/db/src/schema/policy.ts
@@ -1,5 +1,6 @@
 import type { DeploymentCondition } from "@ctrlplane/validators/deployments";
 import type { EnvironmentCondition } from "@ctrlplane/validators/environments";
+import type { DeploymentVersionCondition } from "@ctrlplane/validators/releases";
 import type { InferSelectModel } from "drizzle-orm";
 import type { Options } from "rrule";
 import { sql } from "drizzle-orm";
@@ -72,6 +73,27 @@ export const policyRuleDenyWindow = pgTable("policy_rule_deny_window", {
     .defaultNow(),
 });
 
+export const policyDeploymentVersionSelector = pgTable(
+  "policy_deployment_version_selector",
+  {
+    id: uuid("id").primaryKey().defaultRandom(),
+
+    // can only have one deployment version selector per policy, you can do and
+    // ors in the deployment version selector.
+    policyId: uuid("policy_id")
+      .notNull()
+      .unique()
+      .references(() => policy.id, { onDelete: "cascade" }),
+
+    name: text("name").notNull(),
+    description: text("description"),
+
+    deploymentVersionSelector: jsonb("deployment_version_selector")
+      .notNull()
+      .$type<DeploymentVersionCondition>(),
+  },
+);
+
 // Create zod schemas from drizzle schemas
 const policyInsertSchema = createInsertSchema(policy, {
   name: z.string().min(1, "Policy name is required"),
@@ -229,3 +251,6 @@ export type PolicyTarget = InferSelectModel<typeof policyTarget>;
 export type PolicyRuleDenyWindow = InferSelectModel<
   typeof policyRuleDenyWindow
 >;
+export type PolicyDeploymentVersionSelector = InferSelectModel<
+  typeof policyDeploymentVersionSelector
+>;
diff --git a/packages/db/src/schema/resource.ts b/packages/db/src/schema/resource.ts
index fadd242f3..138e9e4e5 100644
--- a/packages/db/src/schema/resource.ts
+++ b/packages/db/src/schema/resource.ts
@@ -119,6 +119,28 @@ export const resourceRelease = pgTable(
   }),
 );
 
+export const resourceReleaseRelations = relations(
+  resourceRelease,
+  ({ one }) => ({
+    desiredRelease: one(release, {
+      fields: [resourceRelease.desiredReleaseId],
+      references: [release.id],
+    }),
+    deployment: one(deployment, {
+      fields: [resourceRelease.deploymentId],
+      references: [deployment.id],
+    }),
+    environment: one(environment, {
+      fields: [resourceRelease.environmentId],
+      references: [environment.id],
+    }),
+    resource: one(resource, {
+      fields: [resourceRelease.resourceId],
+      references: [resource.id],
+    }),
+  }),
+);
+
 export const resourceRelations = relations(resource, ({ one, many }) => ({
   metadata: many(resourceMetadata),
   variables: many(resourceVariable),
diff --git a/packages/release-manager/package.json b/packages/release-manager/package.json
index d22b0e6d2..8aaa83058 100644
--- a/packages/release-manager/package.json
+++ b/packages/release-manager/package.json
@@ -29,6 +29,7 @@
     "@ctrlplane/eslint-config": "workspace:*",
     "@ctrlplane/prettier-config": "workspace:*",
     "@ctrlplane/tsconfig": "workspace:*",
+    "@types/lodash": "catalog:",
     "@types/node": "catalog:node22",
     "eslint": "catalog:",
     "prettier": "catalog:",
diff --git a/packages/release-manager/src/variables/types.ts b/packages/release-manager/src/variables/types.ts
index 71487618a..a401bd81b 100644
--- a/packages/release-manager/src/variables/types.ts
+++ b/packages/release-manager/src/variables/types.ts
@@ -1,4 +1,4 @@
-import type { ReleaseIdentifier } from "src/types";
+import type { ReleaseIdentifier } from "../types.js";
 
 export type Variable<T = any> = {
   id: string;
diff --git a/packages/rule-engine/package.json b/packages/rule-engine/package.json
index aad5aac77..f76546992 100644
--- a/packages/rule-engine/package.json
+++ b/packages/rule-engine/package.json
@@ -25,6 +25,7 @@
   },
   "dependencies": {
     "@ctrlplane/db": "workspace:*",
+    "@ctrlplane/logger": "workspace:*",
     "@ctrlplane/validators": "workspace:*",
     "@date-fns/tz": "^1.2.0",
     "date-fns": "^4.1.0",
@@ -37,6 +38,7 @@
     "@ctrlplane/eslint-config": "workspace:*",
     "@ctrlplane/prettier-config": "workspace:*",
     "@ctrlplane/tsconfig": "workspace:*",
+    "@types/lodash": "catalog:",
     "@types/node": "catalog:node22",
     "eslint": "catalog:",
     "prettier": "catalog:",
diff --git a/packages/rule-engine/src/db/create-ctx.ts b/packages/rule-engine/src/db/create-ctx.ts
index 0c12aa9c6..8383a0f27 100644
--- a/packages/rule-engine/src/db/create-ctx.ts
+++ b/packages/rule-engine/src/db/create-ctx.ts
@@ -1,6 +1,6 @@
 import type { Tx } from "@ctrlplane/db";
-import { and, eq } from "drizzle-orm";
 
+import { and, eq } from "@ctrlplane/db";
 import { resourceRelease } from "@ctrlplane/db/schema";
 
 import type { ReleaseRepository } from "../types.js";
diff --git a/packages/rule-engine/src/db/get-applicable-policies.ts b/packages/rule-engine/src/db/get-applicable-policies.ts
index 1c27da039..da44799db 100644
--- a/packages/rule-engine/src/db/get-applicable-policies.ts
+++ b/packages/rule-engine/src/db/get-applicable-policies.ts
@@ -112,7 +112,7 @@ export const getApplicablePolicies = async (
 ) => {
   const policy = await tx.query.policy.findMany({
     where: eq(schema.policy.workspaceId, workspaceId),
-    with: { targets: true, denyWindows: true },
+    with: { targets: true, denyWindows: true, deploymentVersionSelector: true },
     orderBy: [desc(schema.policy.priority)],
   });
 
diff --git a/packages/rule-engine/src/evaluate.ts b/packages/rule-engine/src/evaluate.ts
index cb4b97d50..04962767e 100644
--- a/packages/rule-engine/src/evaluate.ts
+++ b/packages/rule-engine/src/evaluate.ts
@@ -22,22 +22,31 @@ const denyWindows = (policy: Policy | null) =>
  * deployment is allowed.
  *
  * @param policy - The policy containing deployment rules and deny windows
- * @param releases - One or more releases to evaluate
+ * @param getReleases - A function that returns a list of releases for a given
+ * policy
  * @param context - The deployment context containing information needed for
  * rule evaluation
  * @returns A promise resolving to the evaluation result, including allowed
  * status and chosen release
  */
-export const evaluate = (
+export const evaluate = async (
   policy: Policy | Policy[] | null,
-  releases: Release[] | Release,
+  getReleases: (policy: Policy) => Promise<Release[]> | Release[],
   context: DeploymentResourceContext,
 ) => {
   const policies =
     policy == null ? [] : Array.isArray(policy) ? policy : [policy];
+
   const mergedPolicy = mergePolicies(policies);
+  if (mergedPolicy == null)
+    return {
+      allowed: false,
+      release: undefined,
+    };
+
   const rules = [...denyWindows(mergedPolicy)];
   const engine = new RuleEngine(rules);
+  const releases = await getReleases(mergedPolicy);
   const releaseCollection = Releases.from(releases);
   return engine.evaluate(releaseCollection, context);
 };
diff --git a/packages/rule-engine/src/index.ts b/packages/rule-engine/src/index.ts
index f52aa64f5..f3b5c5e98 100644
--- a/packages/rule-engine/src/index.ts
+++ b/packages/rule-engine/src/index.ts
@@ -4,3 +4,4 @@ export * from "./rule-engine.js";
 export * from "./rules/index.js";
 export * from "./evaluate.js";
 export * from "./utils/merge-policies.js";
+export * from "./utils/get-releases.js";
diff --git a/packages/rule-engine/src/types.ts b/packages/rule-engine/src/types.ts
index 48bc7267c..0fe8a5625 100644
--- a/packages/rule-engine/src/types.ts
+++ b/packages/rule-engine/src/types.ts
@@ -65,6 +65,7 @@ export interface DeploymentResourceRule {
 
 export type Policy = schema.Policy & {
   denyWindows: schema.PolicyRuleDenyWindow[];
+  deploymentVersionSelector: schema.PolicyDeploymentVersionSelector | null;
 };
 
 export type ReleaseRepository = {
diff --git a/packages/rule-engine/src/utils/get-releases.ts b/packages/rule-engine/src/utils/get-releases.ts
new file mode 100644
index 000000000..047f471b3
--- /dev/null
+++ b/packages/rule-engine/src/utils/get-releases.ts
@@ -0,0 +1,118 @@
+import type { Tx } from "@ctrlplane/db";
+import { isAfter } from "date-fns";
+
+import { and, desc, eq, exists, gte, lte } from "@ctrlplane/db";
+import * as SCHEMA from "@ctrlplane/db/schema";
+import { logger } from "@ctrlplane/logger";
+import { JobStatus } from "@ctrlplane/validators/jobs";
+
+import type { DeploymentResourceContext } from "..";
+
+type Policy = SCHEMA.Policy & {
+  denyWindows: SCHEMA.PolicyRuleDenyWindow[];
+  deploymentVersionSelector: SCHEMA.PolicyDeploymentVersionSelector | null;
+};
+
+const log = logger.child({
+  module: "rule-engine",
+  function: "getReleases",
+});
+
+const getIsDateBoundsValid = (
+  latestDeployedReleaseDate?: Date,
+  desiredReleaseCreatedAt?: Date,
+) => {
+  if (latestDeployedReleaseDate == null) return true;
+  if (desiredReleaseCreatedAt == null) return true;
+  return !isAfter(latestDeployedReleaseDate, desiredReleaseCreatedAt);
+};
+
+export const getReleases = async (
+  db: Tx,
+  ctx: DeploymentResourceContext,
+  policy: Policy,
+) => {
+  const latestDeployedRelease = await db.query.release.findFirst({
+    where: and(
+      eq(SCHEMA.release.deploymentId, ctx.deployment.id),
+      eq(SCHEMA.release.resourceId, ctx.resource.id),
+      eq(SCHEMA.release.environmentId, ctx.environment.id),
+      exists(
+        db
+          .select()
+          .from(SCHEMA.releaseJob)
+          .innerJoin(SCHEMA.job, eq(SCHEMA.releaseJob.jobId, SCHEMA.job.id))
+          .where(
+            and(
+              eq(SCHEMA.releaseJob.releaseId, SCHEMA.release.id),
+              eq(SCHEMA.job.status, JobStatus.Successful),
+            ),
+          )
+          .limit(1),
+      ),
+    ),
+    orderBy: desc(SCHEMA.release.createdAt),
+  });
+
+  const resourceRelease = await db.query.resourceRelease.findFirst({
+    where: and(
+      eq(SCHEMA.resourceRelease.resourceId, ctx.resource.id),
+      eq(SCHEMA.resourceRelease.environmentId, ctx.environment.id),
+      eq(SCHEMA.resourceRelease.deploymentId, ctx.deployment.id),
+    ),
+    with: { desiredRelease: true },
+  });
+
+  const isDateBoundsValid = getIsDateBoundsValid(
+    latestDeployedRelease?.createdAt,
+    resourceRelease?.desiredRelease?.createdAt,
+  );
+
+  if (!isDateBoundsValid)
+    log.warn(
+      `Date bounds are invalid, latestDeployedRelease is after desiredRelease: 
+        latestDeployedRelease: ${latestDeployedRelease?.createdAt != null ? latestDeployedRelease.createdAt.toISOString() : "null"}, 
+        resourceRelease: ${resourceRelease?.desiredRelease?.createdAt != null ? resourceRelease.desiredRelease.createdAt.toISOString() : "null"}`,
+    );
+
+  return db.query.release
+    .findMany({
+      where: and(
+        eq(SCHEMA.release.deploymentId, ctx.deployment.id),
+        eq(SCHEMA.release.resourceId, ctx.resource.id),
+        eq(SCHEMA.release.environmentId, ctx.environment.id),
+        SCHEMA.deploymentVersionMatchesCondition(
+          db,
+          policy.deploymentVersionSelector?.deploymentVersionSelector,
+        ),
+        latestDeployedRelease != null
+          ? gte(SCHEMA.release.createdAt, latestDeployedRelease.createdAt)
+          : undefined,
+        resourceRelease?.desiredRelease != null
+          ? lte(
+              SCHEMA.release.createdAt,
+              resourceRelease.desiredRelease.createdAt,
+            )
+          : undefined,
+      ),
+      with: {
+        version: { with: { metadata: true } },
+        variables: true,
+      },
+      orderBy: desc(SCHEMA.release.createdAt),
+    })
+    .then((releases) =>
+      releases.map((release) => ({
+        ...release,
+        variables: Object.fromEntries(
+          release.variables.map((v) => [v.key, v.value]),
+        ),
+        version: {
+          ...release.version,
+          metadata: Object.fromEntries(
+            release.version.metadata.map((m) => [m.key, m.value]),
+          ),
+        },
+      })),
+    );
+};
diff --git a/packages/rule-engine/src/utils/merge-policies.ts b/packages/rule-engine/src/utils/merge-policies.ts
index aa1225a1b..b4ca5cf0d 100644
--- a/packages/rule-engine/src/utils/merge-policies.ts
+++ b/packages/rule-engine/src/utils/merge-policies.ts
@@ -1,11 +1,37 @@
+import type { DeploymentVersionCondition } from "@ctrlplane/validators/releases";
 import _ from "lodash";
+import { isPresent } from "ts-is-present";
+
+import {
+  ComparisonOperator,
+  ConditionType,
+} from "@ctrlplane/validators/conditions";
 
 import type { Policy } from "../types.js";
 
+const mergeVersionSelectors = (
+  policies: Policy[],
+): DeploymentVersionCondition | null => {
+  const versionSelectors = policies
+    .map((p) => p.deploymentVersionSelector?.deploymentVersionSelector)
+    .filter(isPresent);
+
+  if (versionSelectors.length === 0) return null;
+  if (versionSelectors.length === 1) return versionSelectors[0]!;
+
+  return {
+    type: ConditionType.Comparison,
+    operator: ComparisonOperator.And,
+    conditions: versionSelectors,
+  };
+};
+
 export const mergePolicies = (policies: Policy[]): Policy | null => {
   if (policies.length === 0) return null;
   if (policies.length === 1) return policies[0]!;
-  return _.mergeWith(
+
+  const mergedVersionSelector = mergeVersionSelectors(policies);
+  const merged = _.mergeWith(
     policies[0],
     ...policies.slice(1),
     (objValue: any, sourceValue: any) => {
@@ -13,4 +39,9 @@ export const mergePolicies = (policies: Policy[]): Policy | null => {
         return objValue.concat(sourceValue);
     },
   );
+
+  return {
+    ...merged,
+    deploymentVersionSelector: mergedVersionSelector,
+  };
 };
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 9241a0e4f..8f89727ba 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -148,6 +148,9 @@ importers:
       '@ctrlplane/logger':
         specifier: workspace:*
         version: link:../../packages/logger
+      '@ctrlplane/release-manager':
+        specifier: workspace:*
+        version: link:../../packages/release-manager
       '@ctrlplane/rule-engine':
         specifier: workspace:*
         version: link:../../packages/rule-engine
@@ -1257,6 +1260,9 @@ importers:
       '@ctrlplane/tsconfig':
         specifier: workspace:*
         version: link:../../tooling/typescript
+      '@types/lodash':
+        specifier: 'catalog:'
+        version: 4.17.12
       '@types/node':
         specifier: catalog:node22
         version: 22.13.10
@@ -1278,6 +1284,9 @@ importers:
       '@ctrlplane/db':
         specifier: workspace:*
         version: link:../db
+      '@ctrlplane/logger':
+        specifier: workspace:*
+        version: link:../logger
       '@ctrlplane/validators':
         specifier: workspace:*
         version: link:../validators
@@ -1309,6 +1318,9 @@ importers:
       '@ctrlplane/tsconfig':
         specifier: workspace:*
         version: link:../../tooling/typescript
+      '@types/lodash':
+        specifier: 'catalog:'
+        version: 4.17.12
       '@types/node':
         specifier: catalog:node22
         version: 22.13.10