diff --git a/extensions/ql-vscode/src/codeql-cli/cli.ts b/extensions/ql-vscode/src/codeql-cli/cli.ts
index 431713152fa..a53c4337ba3 100644
--- a/extensions/ql-vscode/src/codeql-cli/cli.ts
+++ b/extensions/ql-vscode/src/codeql-cli/cli.ts
@@ -1909,38 +1909,12 @@ function shouldDebugCliServer() {
 export class CliVersionConstraint {
   // The oldest version of the CLI that we support. This is used to determine
   // whether to show a warning about the CLI being too old on startup.
-  public static OLDEST_SUPPORTED_CLI_VERSION = new SemVer("v2.15.5");
-
-  public static CLI_VERSION_WITHOUT_MRVA_EXTENSIBLE_PREDICATE_HACK = new SemVer(
-    "2.16.1",
-  );
-
-  /**
-   * CLI version where there is support for multiple queries on the pack create command.
-   */
-  public static CLI_VERSION_WITH_MULTI_QUERY_PACK_CREATE = new SemVer("2.16.1");
+  public static OLDEST_SUPPORTED_CLI_VERSION = new SemVer("2.16.6");
 
   constructor(private readonly cli: CodeQLCliServer) {
     /**/
   }
 
-  private async isVersionAtLeast(v: SemVer) {
-    return (await this.cli.getVersion()).compare(v) >= 0;
-  }
-
-  async preservesExtensiblePredicatesInMrvaPack() {
-    // Negated, because we _stopped_ preserving these in 2.16.1.
-    return !(await this.isVersionAtLeast(
-      CliVersionConstraint.CLI_VERSION_WITHOUT_MRVA_EXTENSIBLE_PREDICATE_HACK,
-    ));
-  }
-
-  async supportsPackCreateWithMultipleQueries() {
-    return this.isVersionAtLeast(
-      CliVersionConstraint.CLI_VERSION_WITH_MULTI_QUERY_PACK_CREATE,
-    );
-  }
-
   async supportsMrvaPackCreate(): Promise<boolean> {
     return (await this.cli.getFeatures()).mrvaPackCreate === true;
   }
diff --git a/extensions/ql-vscode/src/variant-analysis/run-remote-query.ts b/extensions/ql-vscode/src/variant-analysis/run-remote-query.ts
index 2251afe4921..c49d9d3f27e 100644
--- a/extensions/ql-vscode/src/variant-analysis/run-remote-query.ts
+++ b/extensions/ql-vscode/src/variant-analysis/run-remote-query.ts
@@ -116,15 +116,6 @@ async function generateQueryPack(
 
   let precompilationOpts: string[];
   if (cliSupportsMrvaPackCreate) {
-    if (
-      qlPackDetails.queryFiles.length > 1 &&
-      !(await cliServer.cliConstraints.supportsPackCreateWithMultipleQueries())
-    ) {
-      throw new Error(
-        `Installed CLI version does not allow creating a MRVA pack with multiple queries`,
-      );
-    }
-
     const queryOpts = qlPackDetails.queryFiles.flatMap((q) => [
       "--query",
       join(targetPackPath, relative(qlPackDetails.qlPackRootPath, q)),
diff --git a/extensions/ql-vscode/supported_cli_versions.json b/extensions/ql-vscode/supported_cli_versions.json
index 4d7d065edde..d6f5db05c8e 100644
--- a/extensions/ql-vscode/supported_cli_versions.json
+++ b/extensions/ql-vscode/supported_cli_versions.json
@@ -3,6 +3,5 @@
   "v2.18.4",
   "v2.17.6",
   "v2.16.6",
-  "v2.15.5",
   "nightly"
 ]
diff --git a/extensions/ql-vscode/test/vscode-tests/cli-integration/variant-analysis/variant-analysis-manager.test.ts b/extensions/ql-vscode/test/vscode-tests/cli-integration/variant-analysis/variant-analysis-manager.test.ts
index 1f770162533..62a8af2b61f 100644
--- a/extensions/ql-vscode/test/vscode-tests/cli-integration/variant-analysis/variant-analysis-manager.test.ts
+++ b/extensions/ql-vscode/test/vscode-tests/cli-integration/variant-analysis/variant-analysis-manager.test.ts
@@ -15,7 +15,6 @@ import { isAbsolute, join } from "path";
 
 import { VariantAnalysisManager } from "../../../../src/variant-analysis/variant-analysis-manager";
 import type { CodeQLCliServer } from "../../../../src/codeql-cli/cli";
-import { CliVersionConstraint } from "../../../../src/codeql-cli/cli";
 import { getActivatedExtension, storagePath } from "../../global.helper";
 import { VariantAnalysisResultsManager } from "../../../../src/variant-analysis/variant-analysis-results-manager";
 import type { VariantAnalysisSubmission } from "../../../../src/variant-analysis/shared/variant-analysis";
@@ -347,13 +346,6 @@ describe("Variant Analysis Manager", () => {
       const queryToRun =
         "Security/CWE/CWE-020/ExternalAPIsUsedWithUntrustedData.ql";
 
-      // Recent versions of the CLI don't preserve queries with extensible predicates in MRVA packs,
-      // because all the necessary info is in the `.packinfo` file.
-      const extraQueries =
-        (await cli.cliConstraints.preservesExtensiblePredicatesInMrvaPack())
-          ? ["Telemetry/ExtractorInformation.ql"]
-          : [];
-
       const qlPackRootPath = join(process.env.TEST_CODEQL_PATH, "java/ql/src");
       const queryPath = join(qlPackRootPath, queryToRun);
       const qlPackFilePath = join(qlPackRootPath, "qlpack.yml");
@@ -362,7 +354,7 @@ describe("Variant Analysis Manager", () => {
         qlPackRootPath,
         qlPackFilePath,
         expectedPackName: "codeql/java-queries",
-        filesThatExist: [queryToRun, ...extraQueries],
+        filesThatExist: [queryToRun],
         filesThatDoNotExist: [],
         qlxFilesThatExist: [],
         dependenciesToCheck: ["codeql/java-all"],
@@ -372,13 +364,6 @@ describe("Variant Analysis Manager", () => {
     });
 
     it("should run multiple queries that are part of the same pack", async () => {
-      if (!(await cli.cliConstraints.supportsPackCreateWithMultipleQueries())) {
-        console.log(
-          `Skipping test because MRVA with multiple queries is only suppported in CLI version ${CliVersionConstraint.CLI_VERSION_WITH_MULTI_QUERY_PACK_CREATE} or later.`,
-        );
-        return;
-      }
-
       await doVariantAnalysisTest({
         queryPaths: [
           "data-qlpack-multiple-queries/query1.ql",