--- a/js/src/tests/jstests.list
+++ b/js/src/tests/jstests.list
@@ -1223,15 +1223,20 @@ skip script test262/language/expressions
 # test262 importer merges all includes in a per directory shell.js file, breaking this harness test case.
 skip script test262/harness/detachArrayBuffer.js
 
 
 ####################################################
 # Tests disabled due to invalid test expectations  #
 ####################################################
 
+# https://github.com/tc39/proposal-json-superset going to stage 4 invalidates
+# these tests.  https://github.com/tc39/test262/pull/2044 later removes them.
+skip script test262/language/line-terminators/invalid-string-ls.js
+skip script test262/language/line-terminators/invalid-string-ps.js
+
 # https://github.com/tc39/test262/pull/1965
 skip script test262/language/expressions/dynamic-import/indirect-resolution.js
 skip script test262/language/expressions/dynamic-import/namespace/default-property-not-set-own.js
 
 # https://github.com/tc39/test262/pull/2023
 skip script test262/language/statements/try/early-catch-var.js
 skip script test262/language/eval-code/direct/var-env-lower-lex-catch-non-strict.js

--- a/js/src/tests/test262/GIT-INFO
+++ b/js/src/tests/test262/GIT-INFO
@@ -1,5 +1,8 @@
-commit 8175f6c05eef922c062e8f5bfae0faaef9404202
+commit 3468dad291251d4759ab6270d4fb8b75befa8d93
 Author: Mike Pennisi <mike@mikepennisi.com>
-Date:   Tue Jan 1 13:57:23 2019 -0500
+Date:   Tue Jan 1 12:03:27 2019 -0500
 
-    Improve name of line terminator tests
+    Improve coverage for line terminators
+    
+    Previous commits restructured the tests for line terminators and made
+    coverage gaps more apparent. Introduce new files to improve coverage.

new file mode 100644
--- /dev/null
+++ b/js/src/tests/test262/language/line-terminators/comment-multi-ps.js
@@ -0,0 +1,29 @@
+// |reftest| error:Test262Error
+// Copyright 2019 Mike Pennisi.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: Multi line comment can contain PARAGRAPH SEPARATOR (U+2029)
+esid: sec-line-terminators
+es5id: 7.3_A5.1_T2
+description: Insert real PARAGRAPH SEPARATOR into multi line comment
+negative:
+  phase: runtime
+  type: Test262Error
+---*/
+
+// Because this test concerns the interpretation of non-executable character
+// sequences within ECMAScript source code, special care must be taken to
+// ensure that executable code is evaluated as expected.
+//
+// Express the intended behavior by intentionally throwing an error; this
+// guarantees that test runners will only consider the test "passing" if
+// executable sequences are correctly interpreted as such.
+
+var x = 0;
+
+/*
x = 1;
*/
+
+if (x === 0) {
+  throw new Test262Error();
+}

new file mode 100644
--- /dev/null
+++ b/js/src/tests/test262/language/line-terminators/invalid-regexp-cr.js
@@ -0,0 +1,18 @@
+// |reftest| error:SyntaxError
+// Copyright 2019 Mike Pennisi.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-line-terminators
+es5id: 7.3-7
+description: >
+    7.3 - ES5 recognizes the character <CR> (\u000D) as terminating
+    regular expression literals
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+/
/

new file mode 100644
--- /dev/null
+++ b/js/src/tests/test262/language/line-terminators/invalid-regexp-lf.js
@@ -0,0 +1,19 @@
+// |reftest| error:SyntaxError
+// Copyright 2019 Mike Pennisi.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-line-terminators
+es5id: 7.3-7
+description: >
+    7.3 - ES5 recognizes the character <LF> (\u000A) as terminating
+    regular expression literals
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+/
+/

new file mode 100644
--- /dev/null
+++ b/js/src/tests/test262/language/line-terminators/invalid-string-ls.js
@@ -0,0 +1,17 @@
+// |reftest| error:SyntaxError
+// Copyright 2019 Mike Pennisi.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: LINE SEPARATOR (U+2028) within strings is not allowed
+es5id: 7.3_A2.2_T1
+esid: sec-line-terminators
+description: Insert LINE SEPARATOR (\u2028) into string
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+'
'

new file mode 100644
--- /dev/null
+++ b/js/src/tests/test262/language/line-terminators/invalid-string-ps.js
@@ -0,0 +1,17 @@
+// |reftest| error:SyntaxError
+// Copyright 2019 Mike Pennisi.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: PARAGRAPH SEPARATOR (U+2029) within strings is not allowed
+es5id: 7.3_A2.2_T1
+esid: sec-line-terminators
+description: Insert PARAGRAPH SEPARATOR (\u2029) into string
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+'
'