diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7a0cf8c6a..c66a01dc4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Fill Column: right-click a column header and choose Fill Column to set one value across all loaded rows. The change is staged like a normal edit, so you review it and Save before it applies, and one undo reverts the whole fill. Not available on primary key columns. (#1304)
 - AWS IAM authentication for PostgreSQL and MySQL connections to RDS and Aurora. Pick AWS IAM in the connection's Authentication field and use an access key, a named AWS profile, or SSO. TablePro generates a fresh login token on every connect and reconnect, so you never paste an expiring token, and SSL is required automatically. (#1291)
 
+### Fixed
+
+- Installing or updating a plugin right after updating TablePro now refetches the current plugin list first, so it no longer fails against a stale cached list (the error a restart used to clear). (#1380)
+
 ## [0.44.0] - 2026-05-23
 
 ### Added
diff --git a/TablePro/Core/Plugins/PluginManager+AutoUpdate.swift b/TablePro/Core/Plugins/PluginManager+AutoUpdate.swift
index d89180ef8..c87632a61 100644
--- a/TablePro/Core/Plugins/PluginManager+AutoUpdate.swift
+++ b/TablePro/Core/Plugins/PluginManager+AutoUpdate.swift
@@ -29,7 +29,7 @@ extension PluginManager {
             return
         }
 
-        await RegistryClient.shared.fetchManifest()
+        await RegistryClient.shared.fetchManifest(forceRefresh: true)
         refreshRegistryUpdateSet()
         guard let manifest = RegistryClient.shared.manifest else {
             reconciliationManifestAttempts += 1
@@ -92,6 +92,7 @@ extension PluginManager {
             let outcome = try await updateFromRegistry(
                 registryPlugin,
                 existingPluginLoaded: false,
+                refreshManifest: false,
                 progress: { _ in }
             )
             switch outcome {
diff --git a/TablePro/Core/Plugins/PluginManager+Install.swift b/TablePro/Core/Plugins/PluginManager+Install.swift
index e53172eee..ceed20ad1 100644
--- a/TablePro/Core/Plugins/PluginManager+Install.swift
+++ b/TablePro/Core/Plugins/PluginManager+Install.swift
@@ -11,7 +11,6 @@ extension PluginManager {
         _ registryPlugin: RegistryPlugin,
         progress: @escaping @MainActor @Sendable (Double) -> Void
     ) async throws -> PluginEntry {
-        let binary = try validateRegistryCompatibility(registryPlugin)
         if plugins.contains(where: { $0.id == registryPlugin.id }) {
             throw PluginError.pluginConflict(existingName: registryPlugin.name)
         }
@@ -23,6 +22,9 @@ extension PluginManager {
         installsInFlight.insert(registryPlugin.id)
         defer { installsInFlight.remove(registryPlugin.id) }
 
+        let registryPlugin = await RegistryClient.shared.refreshedPlugin(matching: registryPlugin)
+        let binary = try validateRegistryCompatibility(registryPlugin)
+
         let userPluginsDir = self.userPluginsDir
         let stateHandler: @Sendable (StagedInstallState) async -> Void = { state in
             if case .downloading(let fraction) = state {
@@ -46,10 +48,9 @@ extension PluginManager {
     func updateFromRegistry(
         _ registryPlugin: RegistryPlugin,
         existingPluginLoaded: Bool = true,
+        refreshManifest: Bool = true,
         progress: @escaping @MainActor @Sendable (Double) -> Void
     ) async throws -> PluginUpdateOutcome {
-        let binary = try validateRegistryCompatibility(registryPlugin)
-
         if let existing = plugins.first(where: { $0.id == registryPlugin.id }),
            existing.source == .builtIn {
             throw PluginError.pluginConflict(existingName: existing.name)
@@ -63,6 +64,11 @@ extension PluginManager {
         installsInFlight.insert(registryPlugin.id)
         defer { installsInFlight.remove(registryPlugin.id) }
 
+        let registryPlugin = refreshManifest
+            ? await RegistryClient.shared.refreshedPlugin(matching: registryPlugin)
+            : registryPlugin
+        let binary = try validateRegistryCompatibility(registryPlugin)
+
         let hasLive = pluginHasLiveConnections(registryPlugin)
         let userPluginsDir = self.userPluginsDir
         let stateHandler: @Sendable (StagedInstallState) async -> Void = { state in
diff --git a/TablePro/Core/Plugins/Registry/RegistryClient.swift b/TablePro/Core/Plugins/Registry/RegistryClient.swift
index e69172072..0969e49a2 100644
--- a/TablePro/Core/Plugins/Registry/RegistryClient.swift
+++ b/TablePro/Core/Plugins/Registry/RegistryClient.swift
@@ -114,10 +114,7 @@ final class RegistryClient {
             UserDefaults.standard.set(currentURL, forKey: Self.lastRegistryURLKey)
         }
 
-        var request = URLRequest(url: registryURL)
-        if !forceRefresh, let etag = cachedETag {
-            request.setValue(etag, forHTTPHeaderField: "If-None-Match")
-        }
+        let request = makeManifestRequest(forceRefresh: forceRefresh)
 
         do {
             let (data, response) = try await session.data(for: request)
@@ -174,6 +171,21 @@ final class RegistryClient {
         }
     }
 
+    func makeManifestRequest(forceRefresh: Bool) -> URLRequest {
+        var request = URLRequest(url: registryURL)
+        if forceRefresh {
+            request.cachePolicy = .reloadIgnoringLocalCacheData
+        } else if let etag = cachedETag {
+            request.setValue(etag, forHTTPHeaderField: "If-None-Match")
+        }
+        return request
+    }
+
+    func refreshedPlugin(matching plugin: RegistryPlugin) async -> RegistryPlugin {
+        await fetchManifest(forceRefresh: true)
+        return manifest?.plugins.first { $0.id == plugin.id } ?? plugin
+    }
+
     private func fallbackToCacheOrFail(message: String) {
         if manifest != nil {
             fetchState = .loaded
diff --git a/TableProTests/Core/Plugins/PluginManagerReconciliationTests.swift b/TableProTests/Core/Plugins/PluginManagerReconciliationTests.swift
index ebd582a14..5f3c4b148 100644
--- a/TableProTests/Core/Plugins/PluginManagerReconciliationTests.swift
+++ b/TableProTests/Core/Plugins/PluginManagerReconciliationTests.swift
@@ -105,4 +105,11 @@ struct PluginManagerReconciliationTests {
         #expect(!PluginManager.reconciliationShouldRetry(sawTransientFailure: false, retryRemaining: true))
         #expect(!PluginManager.reconciliationShouldRetry(sawTransientFailure: false, retryRemaining: false))
     }
+
+    @Test("forceRefresh manifest request bypasses the local cache and sends no If-None-Match")
+    func forceRefreshRequestBypassesCache() {
+        let request = RegistryClient.shared.makeManifestRequest(forceRefresh: true)
+        #expect(request.cachePolicy == .reloadIgnoringLocalCacheData)
+        #expect(request.value(forHTTPHeaderField: "If-None-Match") == nil)
+    }
 }