diff --git a/CMakeLists.txt b/CMakeLists.txt
index da03ba9..08965ac 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -168,7 +168,6 @@
     third_party/abseil-cpp/absl/strings/escaping.cc
     third_party/abseil-cpp/absl/strings/internal/charconv_bigint.cc
     third_party/abseil-cpp/absl/strings/internal/charconv_parse.cc
-    third_party/abseil-cpp/absl/strings/internal/escaping.cc
     third_party/abseil-cpp/absl/strings/internal/memutil.cc
     third_party/abseil-cpp/absl/strings/internal/utf8.cc
     third_party/abseil-cpp/absl/strings/match.cc