diff --git a/config/cc_core_gcc.in b/config/cc_core_gcc.in
index 4bdbfb88..c49dbd4e 100644
--- a/config/cc_core_gcc.in
+++ b/config/cc_core_gcc.in
@@ -116,7 +116,7 @@ config CC_CORE_V_4_1_2
 
 config CC_CORE_V_4_2_0
     bool
-    prompt "4.2.0"
+    prompt "4.2.0 (EXPERIMENTAL)"
     depends on EXPERIMENTAL
 
 # CT_INSERT_VERSION_ABOVE
diff --git a/config/cc_gcc.in b/config/cc_gcc.in
index 0cb474ab..29fe98d4 100644
--- a/config/cc_gcc.in
+++ b/config/cc_gcc.in
@@ -116,7 +116,7 @@ config CC_V_4_1_2
 
 config CC_V_4_2_0
     bool
-    prompt "4.2.0"
+    prompt "4.2.0 (EXPERIMENTAL)"
     depends on EXPERIMENTAL
 
 # CT_INSERT_VERSION_ABOVE
diff --git a/config/debug/gdb.in b/config/debug/gdb.in
index afd41e1b..086524ce 100644
--- a/config/debug/gdb.in
+++ b/config/debug/gdb.in
@@ -39,7 +39,7 @@ choice
 
 config GDB_V_snapshot
     bool
-    prompt "snapshot"
+    prompt "snapshot (EXPERIMENTAL)"
     depends on EXPERIMENTAL
 
 config GDB_V_6_2_1