diff --git a/bindings/go/evmc/evmc.go b/bindings/go/evmc/evmc.go
index f0b1a05..fdb91bc 100644
--- a/bindings/go/evmc/evmc.go
+++ b/bindings/go/evmc/evmc.go
@@ -141,6 +141,7 @@ const (
 	SpuriousDragon   Revision = C.EVMC_SPURIOUS_DRAGON
 	Byzantium        Revision = C.EVMC_BYZANTIUM
 	Constantinople   Revision = C.EVMC_CONSTANTINOPLE
+	Constantinople2  Revision = C.EVMC_CONSTANTINOPLE2
 	Istanbul         Revision = C.EVMC_ISTANBUL
 )
 
diff --git a/include/evmc/evmc.h b/include/evmc/evmc.h
index ee02a72..fbce040 100644
--- a/include/evmc/evmc.h
+++ b/include/evmc/evmc.h
@@ -717,7 +717,14 @@ enum evmc_revision
     EVMC_SPURIOUS_DRAGON = 3,
     EVMC_BYZANTIUM = 4,
     EVMC_CONSTANTINOPLE = 5,
-    EVMC_ISTANBUL = 6,
+
+    /**
+     * Reserved for the post-Constantinople upgrade. The name is likely to
+     * be changed, but the assigned number should stay.
+     */
+    EVMC_CONSTANTINOPLE2 = 6,
+
+    EVMC_ISTANBUL = 7,
 
     /** The maximum EVM revision supported. */
     EVMC_MAX_REVISION = EVMC_ISTANBUL,
diff --git a/lib/instructions/instruction_metrics.c b/lib/instructions/instruction_metrics.c
index 41c9a3a..47ae85c 100644
--- a/lib/instructions/instruction_metrics.c
+++ b/lib/instructions/instruction_metrics.c
@@ -1322,7 +1322,7 @@ const struct evmc_instruction_metrics* evmc_get_instruction_metrics_table(
     switch (revision)
     {
     case EVMC_ISTANBUL:
-        /* Currently the same as Costantinople */
+    case EVMC_CONSTANTINOPLE2:
     case EVMC_CONSTANTINOPLE:
         return constantinople_metrics;
     case EVMC_BYZANTIUM:
diff --git a/lib/instructions/instruction_names.c b/lib/instructions/instruction_names.c
index 8ebe49c..c3347e4 100644
--- a/lib/instructions/instruction_names.c
+++ b/lib/instructions/instruction_names.c
@@ -1046,7 +1046,7 @@ const char* const* evmc_get_instruction_names_table(enum evmc_revision revision)
     switch (revision)
     {
     case EVMC_ISTANBUL:
-        /* Currently the same as Costantinople */
+    case EVMC_CONSTANTINOPLE2:
     case EVMC_CONSTANTINOPLE:
         return constantinople_names;
     case EVMC_BYZANTIUM: