diff --git a/buildSrc/src/main/java/Gecko.kt b/buildSrc/src/main/java/Gecko.kt
index 47001ef0a9f..d0bef82973a 100644
--- a/buildSrc/src/main/java/Gecko.kt
+++ b/buildSrc/src/main/java/Gecko.kt
@@ -16,7 +16,7 @@ internal object GeckoVersions {
     /**
      * GeckoView Release Version.
      */
-    const val release_version = "87.0.20210318103112"
+    const val release_version = "88.0.20210415204500"
 }
 
 @Suppress("Unused", "MaxLineLength")
diff --git a/components/browser/engine-gecko/src/main/java/mozilla/components/browser/engine/gecko/GeckoEngine.kt b/components/browser/engine-gecko/src/main/java/mozilla/components/browser/engine/gecko/GeckoEngine.kt
index 8d1c48471d8..bba8c952775 100644
--- a/components/browser/engine-gecko/src/main/java/mozilla/components/browser/engine/gecko/GeckoEngine.kt
+++ b/components/browser/engine-gecko/src/main/java/mozilla/components/browser/engine/gecko/GeckoEngine.kt
@@ -299,9 +299,9 @@ class GeckoEngine(
             override fun onInstallPrompt(ext: org.mozilla.geckoview.WebExtension): GeckoResult<AllowOrDeny>? {
                 val extension = GeckoWebExtension(ext, runtime)
                 return if (webExtensionDelegate.onInstallPermissionRequest(extension)) {
-                    GeckoResult.ALLOW
+                    GeckoResult.allow()
                 } else {
-                    GeckoResult.DENY
+                    GeckoResult.deny()
                 }
             }
 
diff --git a/components/browser/engine-gecko/src/main/java/mozilla/components/browser/engine/gecko/GeckoEngineSession.kt b/components/browser/engine-gecko/src/main/java/mozilla/components/browser/engine/gecko/GeckoEngineSession.kt
index bd460193737..1384738c173 100644
--- a/components/browser/engine-gecko/src/main/java/mozilla/components/browser/engine/gecko/GeckoEngineSession.kt
+++ b/components/browser/engine-gecko/src/main/java/mozilla/components/browser/engine/gecko/GeckoEngineSession.kt
@@ -266,7 +266,7 @@ class GeckoEngineSession(
          * [TrackingProtectionPolicy.TrackingCategory.SCRIPTS_AND_SUB_RESOURCES].
          */
         val shouldBlockContent =
-                policy.contains(TrackingProtectionPolicy.TrackingCategory.SCRIPTS_AND_SUB_RESOURCES)
+            policy.contains(TrackingProtectionPolicy.TrackingCategory.SCRIPTS_AND_SUB_RESOURCES)
 
         val enabledInBrowsingMode = if (privateMode) {
             policy.useForPrivateSessions
diff --git a/components/browser/engine-gecko/src/main/java/mozilla/components/browser/engine/gecko/NestedGeckoView.kt b/components/browser/engine-gecko/src/main/java/mozilla/components/browser/engine/gecko/NestedGeckoView.kt
index fab3c1134b1..a1ba885563a 100644
--- a/components/browser/engine-gecko/src/main/java/mozilla/components/browser/engine/gecko/NestedGeckoView.kt
+++ b/components/browser/engine-gecko/src/main/java/mozilla/components/browser/engine/gecko/NestedGeckoView.kt
@@ -119,11 +119,11 @@ open class NestedGeckoView(context: Context) : GeckoView(context), NestedScrolli
 
     @VisibleForTesting
     internal fun updateInputResult(event: MotionEvent) {
-        super.onTouchEventForResult(event)
+        super.onTouchEventForDetailResult(event)
             .accept {
                 // This should never be null.
                 // Prefer to crash and investigate after rather than not knowing about problems with this.
-                inputResult = it!!
+                inputResult = it?.handledResult()!!
                 startNestedScroll(ViewCompat.SCROLL_AXIS_VERTICAL)
             }
     }
diff --git a/components/browser/engine-gecko/src/main/java/mozilla/components/browser/engine/gecko/selection/GeckoSelectionActionDelegate.kt b/components/browser/engine-gecko/src/main/java/mozilla/components/browser/engine/gecko/selection/GeckoSelectionActionDelegate.kt
index 2d3a0b5f1ce..781430af630 100644
--- a/components/browser/engine-gecko/src/main/java/mozilla/components/browser/engine/gecko/selection/GeckoSelectionActionDelegate.kt
+++ b/components/browser/engine-gecko/src/main/java/mozilla/components/browser/engine/gecko/selection/GeckoSelectionActionDelegate.kt
@@ -58,8 +58,13 @@ open class GeckoSelectionActionDelegate(
     }
 
     override fun performAction(id: String, item: MenuItem): Boolean {
-        val selectedText = mSelection?.text ?: return super.performAction(id, item)
+        /* Temporary, removed once https://bugzilla.mozilla.org/show_bug.cgi?id=1694983 is fixed */
+        try {
+            val selectedText = mSelection?.text ?: return super.performAction(id, item)
 
-        return customDelegate.performAction(id, selectedText) || super.performAction(id, item)
+            return customDelegate.performAction(id, selectedText) || super.performAction(id, item)
+        } catch (e: SecurityException) {
+            return false
+        }
     }
 }
diff --git a/components/browser/engine-gecko/src/main/java/mozilla/components/browser/engine/gecko/webextension/GeckoWebExtension.kt b/components/browser/engine-gecko/src/main/java/mozilla/components/browser/engine/gecko/webextension/GeckoWebExtension.kt
index 16de5d808a8..0f24dab354d 100644
--- a/components/browser/engine-gecko/src/main/java/mozilla/components/browser/engine/gecko/webextension/GeckoWebExtension.kt
+++ b/components/browser/engine-gecko/src/main/java/mozilla/components/browser/engine/gecko/webextension/GeckoWebExtension.kt
@@ -302,9 +302,9 @@ class GeckoWebExtension(
                     tabDetails.active == true,
                     tabDetails.url)
                 ) {
-                    GeckoResult.ALLOW
+                    GeckoResult.allow()
                 } else {
-                    GeckoResult.DENY
+                    GeckoResult.deny()
                 }
             }
 
@@ -315,12 +315,12 @@ class GeckoWebExtension(
 
                 return if (ext != null) {
                     if (tabHandler.onCloseTab(this@GeckoWebExtension, session)) {
-                        GeckoResult.ALLOW
+                        GeckoResult.allow()
                     } else {
-                        GeckoResult.DENY
+                        GeckoResult.deny()
                     }
                 } else {
-                    GeckoResult.DENY
+                    GeckoResult.deny()
                 }
             }
         }
diff --git a/components/browser/engine-gecko/src/test/java/mozilla/components/browser/engine/gecko/GeckoEngineSessionTest.kt b/components/browser/engine-gecko/src/test/java/mozilla/components/browser/engine/gecko/GeckoEngineSessionTest.kt
index 4a969d5d80f..faab2e9b5ad 100644
--- a/components/browser/engine-gecko/src/test/java/mozilla/components/browser/engine/gecko/GeckoEngineSessionTest.kt
+++ b/components/browser/engine-gecko/src/test/java/mozilla/components/browser/engine/gecko/GeckoEngineSessionTest.kt
@@ -1127,7 +1127,7 @@ class GeckoEngineSessionTest {
     }
 
     @Test
-    fun `WHEN updating tracking protection with a recommended policy THEN etpEnabled should be enabled`() {
+    fun `WHEN updateing tracking protection with a recommended policy THEN etpEnabled should be enabled`() {
         whenever(runtime.settings).thenReturn(mock())
         whenever(runtime.settings.contentBlocking).thenReturn(mock())
 
@@ -1149,7 +1149,7 @@ class GeckoEngineSessionTest {
     }
 
     @Test
-    fun `WHEN updating tracking protection with a none policy THEN etpEnabled should be enabled`() {
+    fun `WHEN calling updateTrackingProtection with a none policy THEN etpEnabled should be disabled`() {
         whenever(runtime.settings).thenReturn(mock())
         whenever(runtime.settings.contentBlocking).thenReturn(mock())
 
@@ -1171,7 +1171,7 @@ class GeckoEngineSessionTest {
     }
 
     @Test
-    fun `WHEN update content blocking with a policy SCRIPTS_AND_SUB_RESOURCES useForPrivateSessions being in privateMode THEN useTrackingProtection should be true`() {
+    fun `WHEN updating the contentBlocking with a policy SCRIPTS_AND_SUB_RESOURCES useForPrivateSessions being in privateMode THEN useTrackingProtection should be true`() {
         val geckoSetting = mock<GeckoSessionSettings>()
         val geckoSession = mock<GeckoSession>()
 
@@ -1249,7 +1249,7 @@ class GeckoEngineSessionTest {
     }
 
     @Test
-    fun `changes to enableTrackingProtection will be notified to all new observers`() {
+    fun `changes to updateTrackingProtection will be notified to all new observers`() {
         whenever(runtime.settings).thenReturn(mock())
         whenever(runtime.settings.contentBlocking).thenReturn(mock())
         val session = GeckoEngineSession(runtime, geckoSessionProvider = geckoSessionProvider)
diff --git a/components/browser/engine-gecko/src/test/java/mozilla/components/browser/engine/gecko/GeckoEngineTest.kt b/components/browser/engine-gecko/src/test/java/mozilla/components/browser/engine/gecko/GeckoEngineTest.kt
index 49514a9db3f..eb9bdb294ca 100644
--- a/components/browser/engine-gecko/src/test/java/mozilla/components/browser/engine/gecko/GeckoEngineTest.kt
+++ b/components/browser/engine-gecko/src/test/java/mozilla/components/browser/engine/gecko/GeckoEngineTest.kt
@@ -862,7 +862,7 @@ class GeckoEngineTest {
         val geckoDelegateCaptor = argumentCaptor<WebExtensionController.PromptDelegate>()
         verify(webExtensionController).promptDelegate = geckoDelegateCaptor.capture()
 
-        assertEquals(GeckoResult.DENY, geckoDelegateCaptor.value.onInstallPrompt(extension))
+        assertEquals(GeckoResult.deny(), geckoDelegateCaptor.value.onInstallPrompt(extension))
         val extensionCaptor = argumentCaptor<WebExtension>()
         verify(webExtensionsDelegate).onInstallPermissionRequest(extensionCaptor.capture())
         val capturedExtension =
@@ -870,7 +870,7 @@ class GeckoEngineTest {
         assertEquals(extension, capturedExtension.nativeExtension)
 
         whenever(webExtensionsDelegate.onInstallPermissionRequest(any())).thenReturn(true)
-        assertEquals(GeckoResult.ALLOW, geckoDelegateCaptor.value.onInstallPrompt(extension))
+        assertEquals(GeckoResult.allow(), geckoDelegateCaptor.value.onInstallPrompt(extension))
     }
 
     @Test
@@ -912,7 +912,7 @@ class GeckoEngineTest {
         assertEquals(updatedExtension, updated.nativeExtension)
 
         onPermissionsGrantedCaptor.value.invoke(true)
-        assertEquals(GeckoResult.ALLOW, result)
+        assertEquals(GeckoResult.allow(), result)
     }
 
     @Test
@@ -953,7 +953,7 @@ class GeckoEngineTest {
         assertEquals(updatedExtension, updated.nativeExtension)
 
         onPermissionsGrantedCaptor.value.invoke(true)
-        assertEquals(GeckoResult.ALLOW, result)
+        assertEquals(GeckoResult.allow(), result)
     }
 
     @Test
diff --git a/components/browser/engine-gecko/src/test/java/mozilla/components/browser/engine/gecko/selection/GeckoSelectionActionDelegateTest.kt b/components/browser/engine-gecko/src/test/java/mozilla/components/browser/engine/gecko/selection/GeckoSelectionActionDelegateTest.kt
index 004962b1ba3..9d73baae3c7 100644
--- a/components/browser/engine-gecko/src/test/java/mozilla/components/browser/engine/gecko/selection/GeckoSelectionActionDelegateTest.kt
+++ b/components/browser/engine-gecko/src/test/java/mozilla/components/browser/engine/gecko/selection/GeckoSelectionActionDelegateTest.kt
@@ -7,9 +7,11 @@ package mozilla.components.browser.engine.gecko.selection
 import android.app.Activity
 import android.app.Application
 import android.app.Service
+import android.view.MenuItem
 import mozilla.components.concept.engine.selection.SelectionActionDelegate
 import mozilla.components.support.test.mock
 import org.junit.Assert
+import org.junit.Assert.assertFalse
 import org.junit.Assert.assertNotNull
 import org.junit.Assert.assertNull
 import org.junit.Test
@@ -55,6 +57,25 @@ class GeckoSelectionActionDelegateTest {
             Assert.assertTrue(actualActions.contains(it))
         }
     }
+
+    @Test
+    fun `WHEN perform action triggers a security exception THEN false is returned`() {
+        val customActions = arrayOf("1", "2", "3")
+        val customDelegate = object : SelectionActionDelegate {
+            override fun getAllActions(): Array<String> = customActions
+            override fun isActionAvailable(id: String, selectedText: String): Boolean = false
+            override fun getActionTitle(id: String): CharSequence? = ""
+            override fun performAction(id: String, selectedText: String): Boolean {
+                throw SecurityException("test")
+            }
+            override fun sortedActions(actions: Array<String>): Array<String> {
+                return actions
+            }
+        }
+
+        val geckoDelegate = TestGeckoSelectionActionDelegate(mock(), customDelegate)
+        assertFalse(geckoDelegate.performAction("test", mock()))
+    }
 }
 
 /**
@@ -65,4 +86,7 @@ class TestGeckoSelectionActionDelegate(
     customDelegate: SelectionActionDelegate
 ) : GeckoSelectionActionDelegate(activity, customDelegate) {
     public override fun getAllActions() = super.getAllActions()
+    public override fun performAction(id: String, item: MenuItem): Boolean {
+        return super.performAction(id, item)
+    }
 }
diff --git a/components/browser/engine-gecko/src/test/java/org/mozilla/geckoview/MockWebExtension.kt b/components/browser/engine-gecko/src/test/java/org/mozilla/geckoview/MockWebExtension.kt
index 2f7e87d6aa5..0046f6dc4b2 100644
--- a/components/browser/engine-gecko/src/test/java/org/mozilla/geckoview/MockWebExtension.kt
+++ b/components/browser/engine-gecko/src/test/java/org/mozilla/geckoview/MockWebExtension.kt
@@ -4,8 +4,9 @@
 
 package org.mozilla.geckoview
 
+import mozilla.components.support.test.mock
 import org.mozilla.gecko.util.GeckoBundle
 
-class MockWebExtension(bundle: GeckoBundle) : WebExtension(bundle)
+class MockWebExtension(bundle: GeckoBundle) : WebExtension(DelegateControllerProvider { mock() }, bundle)
 class MockCreateTabDetails(bundle: GeckoBundle) : WebExtension.CreateTabDetails(bundle)
 class MockUpdateTabDetails(bundle: GeckoBundle) : WebExtension.UpdateTabDetails(bundle)