diff --git a/README.md b/README.md
index e8b4a28..acc2c98 100644
--- a/README.md
+++ b/README.md
@@ -68,7 +68,7 @@ requirements and limitations of linking on OSX.
 
 **Task:** [ziglang/zig relocation error: symbol pthread_sigmask version GLIBC_2.2.5 not defined in file libc.so.6 with link time reference #7667](https://github.com/ziglang/zig/issues/7667)
 
-Background: one of our internal shared libraries (which we must build with glibc 2.19) does not load on an older system:
+Background: one of our internal shared libraries (which we must build with glibc 2.28) does not load on an older system:
 
 ```
 id: relocation error: /lib/x86_64-linux-gnu/libnss_uber.so.2: symbol pthread_sigmask, version GLIBC_2.2.5 not defined in file libc.so.6 with link time reference
@@ -114,7 +114,7 @@ use musl.
 
 # Testing
 
-## linux cgo + glibc 2.19
+## linux cgo + glibc 2.28
 
 ```
 $ bazel build --platforms @io_bazel_rules_go//go/toolchain:linux_amd64_cgo //test:hello
diff --git a/WORKSPACE b/WORKSPACE
index 21a979c..461bf5b 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -55,7 +55,7 @@ load(
 
 _REGISTER_TOOLCHAINS = [
     "linux_arm64_gnu.2.28",
-    "linux_amd64_gnu.2.19",
+    "linux_amd64_gnu.2.28",
     "darwin_amd64",
     "darwin_arm64",
 ]