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-rw-r--r--src/libstore/worker-protocol.hh3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/libstore/worker-protocol.hh b/src/libstore/worker-protocol.hh
index 6a5f0ed40d46..76721d1fc3be 100644
--- a/src/libstore/worker-protocol.hh
+++ b/src/libstore/worker-protocol.hh
@@ -8,7 +8,7 @@ namespace nix {
 #define WORKER_MAGIC_1 0x6e697863
 #define WORKER_MAGIC_2 0x6478696f
 
-#define PROTOCOL_VERSION 0x10b
+#define PROTOCOL_VERSION 0x10c
 #define GET_PROTOCOL_MAJOR(x) ((x) & 0xff00)
 #define GET_PROTOCOL_MINOR(x) ((x) & 0x00ff)
 
@@ -40,6 +40,7 @@ typedef enum {
     wopQueryPathInfo = 26,
     wopImportPaths = 27,
     wopQueryDerivationOutputNames = 28,
+    wopQuerySubstitutablePathInfos = 29,
 } WorkerOp;