diff --git a/compiler/damlc/tests/BUILD.bazel b/compiler/damlc/tests/BUILD.bazel
index a7cca6ff945..35d39a3030f 100644
--- a/compiler/damlc/tests/BUILD.bazel
+++ b/compiler/damlc/tests/BUILD.bazel
@@ -609,7 +609,7 @@ da_haskell_test(
         ":repl-test.dar",
         "//compiler/damlc",
         "//daml-script/daml:daml-script.dar",
-        "//ledger/sandbox:sandbox-binary",
+        "//ledger/sandbox-classic:sandbox-classic-binary",
         "//ledger/test-common/test-certificates",
     ],
     hackage_deps = [
@@ -652,7 +652,7 @@ da_haskell_test(
         "//compiler/damlc/stable-packages",
         "//compiler/repl-service/server:repl_service_jar",
         "//daml-script/daml:daml-script.dar",
-        "//ledger/sandbox:sandbox-binary",
+        "//ledger/sandbox-classic:sandbox-classic-binary",
     ],
     hackage_deps = [
         "async",
@@ -912,7 +912,7 @@ da_haskell_test(
     data = [
         ":pkg-manager-test.dar",
         "//compiler/damlc",
-        "//ledger/sandbox:sandbox-binary",
+        "//ledger/sandbox-classic:sandbox-classic-binary",
     ],
     hackage_deps = [
         "base",
diff --git a/daml-assistant/daml-helper/BUILD.bazel b/daml-assistant/daml-helper/BUILD.bazel
index dd4d2d642e3..b77f8173948 100644
--- a/daml-assistant/daml-helper/BUILD.bazel
+++ b/daml-assistant/daml-helper/BUILD.bazel
@@ -94,7 +94,7 @@ da_haskell_test(
     srcs = ["test/DA/Daml/Helper/Test/Tls.hs"],
     data = [
         "daml-helper",
-        "//ledger/sandbox:sandbox-binary",
+        "//ledger/sandbox-classic:sandbox-classic-binary",
         "//ledger/test-common/test-certificates",
     ],
     hackage_deps = [
@@ -120,7 +120,7 @@ da_haskell_test(
     data = [
         "//compiler/damlc",
         "//daml-assistant/daml-helper",
-        "//ledger/sandbox:sandbox-binary",
+        "//ledger/sandbox-classic:sandbox-classic-binary",
     ],
     # TODO (MK) https://github.com/digital-asset/daml/issues/9768
     flaky = True,
@@ -162,7 +162,7 @@ da_haskell_test(
         "daml-helper",
         ":test.dar",
         "//ledger-service/http-json:http-json-binary",
-        "//ledger/sandbox:sandbox-binary",
+        "//ledger/sandbox-classic:sandbox-classic-binary",
     ],
     hackage_deps = [
         "base",
@@ -196,7 +196,7 @@ da_haskell_test(
         "daml-helper",
         ":test.dar",
         "//ledger-service/http-json:http-json-binary",
-        "//ledger/sandbox:sandbox-binary",
+        "//ledger/sandbox-classic:sandbox-classic-binary",
     ],
     hackage_deps = [
         "base",
diff --git a/language-support/hs/bindings/BUILD.bazel b/language-support/hs/bindings/BUILD.bazel
index 553047d01f3..a421e9573c7 100644
--- a/language-support/hs/bindings/BUILD.bazel
+++ b/language-support/hs/bindings/BUILD.bazel
@@ -51,7 +51,7 @@ da_haskell_test(
     data = [
         ":for-tests.dar",
         ":for-upload.dar",
-        "//ledger/sandbox:sandbox-binary",
+        "//ledger/sandbox-classic:sandbox-classic-binary",
     ],
     # The tests throw flaky timeout errors. It looks like this comes
     # from a fundamental issue in the Haskell bindings: they eagerly pull
diff --git a/language-support/hs/bindings/test/DA/Ledger/Tests.hs b/language-support/hs/bindings/test/DA/Ledger/Tests.hs
index 68140df185b..9383ac95519 100644
--- a/language-support/hs/bindings/test/DA/Ledger/Tests.hs
+++ b/language-support/hs/bindings/test/DA/Ledger/Tests.hs
@@ -327,7 +327,7 @@ tGetLedgerConfiguration withSandbox = testCase "tGetLedgerConfiguration" $ run w
     xs <- getLedgerConfiguration lid
     Just (Right config) <- liftIO $ timeout 1 (takeStream xs)
     let expected = LedgerConfiguration {
-            maxDeduplicationTime = Duration {durationSeconds = 86400, durationNanos = 0}}
+            maxDeduplicationTime = Duration {durationSeconds = 1800, durationNanos = 0}}
     liftIO $ assertEqual "config" expected config
 
 tUploadDarFileBad :: SandboxTest
diff --git a/libs-haskell/test-utils/DA/Test/Sandbox.hs b/libs-haskell/test-utils/DA/Test/Sandbox.hs
index 22e362d5bc0..535bad55f3e 100644
--- a/libs-haskell/test-utils/DA/Test/Sandbox.hs
+++ b/libs-haskell/test-utils/DA/Test/Sandbox.hs
@@ -57,7 +57,7 @@ defaultSandboxConf = SandboxConfig
 
 getSandboxProc :: SandboxConfig -> FilePath -> IO CreateProcess
 getSandboxProc SandboxConfig{..} portFile = do
-    sandbox <- locateRunfiles (mainWorkspace </> "ledger" </> "sandbox" </> exe "sandbox-binary")
+    sandbox <- locateRunfiles (mainWorkspace </> "ledger" </> "sandbox-classic" </> exe "sandbox-classic-binary")
     tlsArgs <- if enableTls
         then do
             certDir <- locateRunfiles (mainWorkspace </> "ledger" </> "test-common" </> "test-certificates")