diff --git a/.github/workflows/pull_request.yml b/.github/workflows/pull_request.yml
index 29634e0..e56fc56 100644
--- a/.github/workflows/pull_request.yml
+++ b/.github/workflows/pull_request.yml
@@ -4,6 +4,7 @@ on:
   pull_request:
     branches:
       - master
+      - 1.8.x
       - 1.7.x
       - 1.6.x
       - 1.5.x
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index bf2ec49..97cffc1 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -4,6 +4,7 @@ on:
   push:
     branches:
       - master
+      - 1.8.x
       - 1.7.x
       - 1.6.x
       - 1.5.x
diff --git a/Cargo.lock b/Cargo.lock
index f93df13..8aa7111 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -98,9 +98,21 @@ dependencies = [
 
 [[package]]
 name = "regex"
-version = "1.8.4"
+version = "1.9.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d0ab3ca65655bb1e41f2a8c8cd662eb4fb035e67c3f78da1d61dffe89d07300f"
+checksum = "ebee201405406dbf528b8b672104ae6d6d63e6d118cb10e4d51abbc7b58044ff"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-automata",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-automata"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "59b23e92ee4318893fa3fe3e6fb365258efbfe6ac6ab30f090cdcbb7aa37efa9"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -115,7 +127,7 @@ checksum = "dbb5fb1acd8a1a18b3dd5be62d25485eb770e05afb408a9627d14d451bae12da"
 
 [[package]]
 name = "rregex"
-version = "1.8.0"
+version = "1.9.0"
 dependencies = [
  "console_error_panic_hook",
  "js-sys",
diff --git a/Cargo.toml b/Cargo.toml
index 956313a..6b93734 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,7 +2,7 @@
 name = "rregex"
 description = "Rust Regex binding for Javascript"
 license = "MIT"
-version = "1.8.0"
+version = "1.9.0"
 authors = [ "Fede Ramirez <i@2fd.me>" ]
 publish = false
 readme = "README.md"
@@ -11,7 +11,7 @@ homepage = "http://rregex.dev"
 repository = "https://github.com/2fd/rregex"
 
 [dependencies]
-regex = "~1.8"
+regex = "~1.9"
 regex-syntax = "0.7"
 js-sys = "0.3"
 wasm-bindgen = "0.2"
diff --git a/package.json b/package.json
index e5436bf..2bc8613 100644
--- a/package.json
+++ b/package.json
@@ -76,6 +76,11 @@
         "range": "1.7.x",
         "channel": "1.7.x"
       },
+      {
+        "name": "1.8.x",
+        "range": "1.8.x",
+        "channel": "1.8.x"
+      },
       {
         "name": "master"
       }
diff --git a/test/rregex.test.ts b/test/rregex.test.ts
index fb3e8bf..005d9d3 100644
--- a/test/rregex.test.ts
+++ b/test/rregex.test.ts
@@ -114,8 +114,8 @@ describe(`RRegex`, () => {
     const re4 = new RRegex("(?<a>.(?<b>.))(.)(?:.)(?<c>.)")
     expect(re4.capturesLength()).toEqual(5)
 
-    // const re5 = new RRegex("[a&&b]")
-    // expect(re5.capturesLength()).toEqual(1)
+    const re5 = new RRegex("[a&&b]")
+    expect(re5.capturesLength()).toEqual(1)
   })
 
   test(`captureNames`, () => {
@@ -1005,6 +1005,34 @@ describe(`RRegex`, () => {
         }
       })
     })
+
+
+    test('Empty character class', () => {
+      const regex = new RRegex('[a&&b]')
+      expect(regex.syntax()).toEqual({
+        "@name": "regex_syntax::hir::Hir",
+        "@type": "struct",
+        "kind": {
+          "@name": "regex_syntax::hir::HirKind",
+          "@type": "enum",
+          "@variant": "Class",
+          "@values": [
+            {
+              "@name": "regex_syntax::hir::Class",
+              "@type": "enum",
+              "@variant": "Bytes",
+              "@values": [
+                {
+                  "@name": "regex_syntax::hir::ClassBytes",
+                  "@type": "struct",
+                  "ranges": []
+                }
+              ]
+            }
+          ],
+        }
+      })
+    })
   })
 })