diff --git a/Cargo.toml b/Cargo.toml
index 15653fdb..04fade19 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -69,13 +69,13 @@ default-features = false
 features = ["suggestions", "color"]
 
 [features]
-avx-accel = ["bytecount/avx-accel", "regex/unstable"]
+avx-accel = [
+  "bytecount/avx-accel",
+]
 simd-accel = [
   "bytecount/simd-accel",
   "encoding_rs/simd-accel",
-  "regex/unstable",
 ]
-unstable = ["regex/unstable"]
 
 [profile.release]
 debug = true
diff --git a/appveyor.yml b/appveyor.yml
index 73626d4d..26daf224 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -50,7 +50,7 @@ test_script:
 
 before_deploy:
   # Generate artifacts for release
-  - cargo build --release --features unstable
+  - cargo build --release
   - mkdir staging
   - copy target\release\rg.exe staging
   - ps: copy target\release\build\ripgrep-*\out\_rg.ps1 staging
diff --git a/ci/before_deploy.sh b/ci/before_deploy.sh
index c1addbc1..7ee824ec 100755
--- a/ci/before_deploy.sh
+++ b/ci/before_deploy.sh
@@ -8,7 +8,7 @@ set -ex
 
 # Generate artifacts for release
 mk_artifacts() {
-    cargo build --target "$TARGET" --release --features unstable
+    cargo build --target "$TARGET" --release
 }
 
 mk_tarball() {