diff --git a/config/libc/glibc.in b/config/libc/glibc.in
index 2e34793b..5c5f7dd3 100644
--- a/config/libc/glibc.in
+++ b/config/libc/glibc.in
@@ -17,6 +17,10 @@ choice
 # Don't remove next line
 # CT_INSERT_VERSION_BELOW
 
+config LIBC_GLIBC_V_2_20
+    bool
+    prompt "2.20"
+
 config LIBC_GLIBC_V_2_19
     bool
     prompt "2.19"
@@ -96,6 +100,7 @@ config LIBC_VERSION
     string
 # Don't remove next line
 # CT_INSERT_VERSION_STRING_BELOW
+    default "2.20" if LIBC_GLIBC_V_2_20
     default "2.19" if LIBC_GLIBC_V_2_19
     default "2.18" if LIBC_GLIBC_V_2_18
     default "2.17" if LIBC_GLIBC_V_2_17