diff --git a/vc/stack.yaml b/vc/stack.yaml
index 4d91b545..1845af4d 100644
--- a/vc/stack.yaml
+++ b/vc/stack.yaml
@@ -18,7 +18,7 @@
 # resolver: ./custom-snapshot.yaml
 # resolver: https://example.com/snapshots/2018-01-01.yaml
 resolver:
-  url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/20/11.yaml
+  url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/23/25.yaml
 
 # User packages to be built.
 # Various formats can be used as shown in the example below.
diff --git a/vc/stack.yaml.lock b/vc/stack.yaml.lock
index 315a1143..05fbb86e 100644
--- a/vc/stack.yaml.lock
+++ b/vc/stack.yaml.lock
@@ -1,13 +1,13 @@
 # This file was autogenerated by Stack.
 # You should not edit this file by hand.
 # For more information, please see the documentation at:
-#   https://docs.haskellstack.org/en/stable/lock_files
+#   https://docs.haskellstack.org/en/stable/topics/lock_files
 
 packages: []
 snapshots:
 - completed:
-    sha256: adbc602422dde10cc330175da7de8609e70afc41449a7e2d6e8b1827aa0e5008
-    size: 649342
-    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/20/11.yaml
+    sha256: a3501d1b61a539371d85305fe73e1134fc08e7c97498a42952455f011fd97ecf
+    size: 684278
+    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/23/25.yaml
   original:
-    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/20/11.yaml
+    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/23/25.yaml