diff --git a/.changes/20260828_214439_cardano-cli_palas_dijkstra_witnessing_test.yml b/.changes/20260828_214439_cardano-cli_palas_dijkstra_witnessing_test.yml
new file mode 100644
index 0000000000..09dd55b087
--- /dev/null
+++ b/.changes/20260828_214439_cardano-cli_palas_dijkstra_witnessing_test.yml
@@ -0,0 +1,6 @@
+description: |
+  Added an end-to-end test covering Dijkstra transaction witnessing: build-raw, witness and assemble, asserting the text envelope types along the way.
+kind:
+- test
+pr: 1432
+project: cardano-cli
diff --git a/cardano-cli/cardano-cli.cabal b/cardano-cli/cardano-cli.cabal
index 76bd2c288e..3291cbf4e6 100644
--- a/cardano-cli/cardano-cli.cabal
+++ b/cardano-cli/cardano-cli.cabal
@@ -483,6 +483,7 @@ test-suite cardano-cli-golden
     Test.Golden.CreateStaked
     Test.Golden.CreateTestnetData
     Test.Golden.Debug.TransactionView
+    Test.Golden.Dijkstra.Transaction.Assemble
     Test.Golden.ErrorsSpec
     Test.Golden.Genesis.Common
     Test.Golden.Governance.Action
diff --git a/cardano-cli/test/cardano-cli-golden/Test/Golden/Dijkstra/Transaction/Assemble.hs b/cardano-cli/test/cardano-cli-golden/Test/Golden/Dijkstra/Transaction/Assemble.hs
new file mode 100644
index 0000000000..5727805f53
--- /dev/null
+++ b/cardano-cli/test/cardano-cli-golden/Test/Golden/Dijkstra/Transaction/Assemble.hs
@@ -0,0 +1,76 @@
+{-# LANGUAGE OverloadedStrings #-}
+
+module Test.Golden.Dijkstra.Transaction.Assemble where
+
+import Control.Monad (void)
+
+import Test.Cardano.CLI.Util
+
+import Hedgehog (Property)
+import Hedgehog.Extras.Test qualified as H
+
+-- Check that a witness written by `transaction witness` in the Dijkstra era
+-- can be read back by `transaction assemble` to form a transaction.
+-- Regression test for https://github.com/IntersectMBO/cardano-cli/issues/1422
+
+hprop_golden_dijkstra_transaction_assemble_witness_signing_key :: Property
+hprop_golden_dijkstra_transaction_assemble_witness_signing_key =
+  watchdogProp . propertyOnce $ H.moduleWorkspace "tmp" $ \tempDir -> do
+    txBodyFile <- noteTempFile tempDir "tx-body"
+
+    -- Create tx body file
+    void $
+      execCardanoCLI
+        [ "dijkstra"
+        , "transaction"
+        , "build-raw"
+        , "--tx-in"
+        , "2392d2b1200b5139fe555c81261697b29a8ccf561c5c783d46e78a479d977053#0"
+        , "--tx-out"
+        , "addr1q94cxl99qvtwunsqqv6g9mgj3zrawtpt4edsgwxkjtwpy5dsezcht90tmwfur7t5hc9fk8hjd3r5vjwec2h8vmk3xh8s7er7t3+100"
+        , "--fee"
+        , "12"
+        , "--tx-body-file"
+        , txBodyFile
+        ]
+
+    -- Sign it with a single signing key, as a detached witness file
+    witnessFile <- noteTempFile tempDir "single-signing-key-witness"
+    signingKeyFile <-
+      noteInputFile "test/cardano-cli-golden/files/input/conway/keys/payment_keys/signing_key"
+
+    void $
+      execCardanoCLI
+        [ "dijkstra"
+        , "transaction"
+        , "witness"
+        , "--tx-body-file"
+        , txBodyFile
+        , "--signing-key-file"
+        , signingKeyFile
+        , "--mainnet"
+        , "--out-file"
+        , witnessFile
+        ]
+
+    goldenWitnessFile <- H.note "test/cardano-cli-golden/files/golden/dijkstra/transaction/witness_out"
+    H.diffFileVsGoldenFile witnessFile goldenWitnessFile
+
+    -- Assemble the body and the witness back into a signed transaction
+    signedTxFile <- noteTempFile tempDir "signed-tx"
+    void $
+      execCardanoCLI
+        [ "dijkstra"
+        , "transaction"
+        , "assemble"
+        , "--tx-body-file"
+        , txBodyFile
+        , "--witness-file"
+        , witnessFile
+        , "--out-file"
+        , signedTxFile
+        ]
+
+    goldenSignedTxFile <-
+      H.note "test/cardano-cli-golden/files/golden/dijkstra/transaction/assemble_out"
+    H.diffFileVsGoldenFile signedTxFile goldenSignedTxFile
diff --git a/cardano-cli/test/cardano-cli-golden/files/golden/dijkstra/transaction/assemble_out b/cardano-cli/test/cardano-cli-golden/files/golden/dijkstra/transaction/assemble_out
new file mode 100644
index 0000000000..5e3443e3a1
--- /dev/null
+++ b/cardano-cli/test/cardano-cli-golden/files/golden/dijkstra/transaction/assemble_out
@@ -0,0 +1,5 @@
+{
+    "type": "Tx DijkstraEra",
+    "description": "Ledger Cddl Format",
+    "cborHex": "83a300d90102818258202392d2b1200b5139fe555c81261697b29a8ccf561c5c783d46e78a479d977053000181825839016b837ca50316ee4e00033482ed128887d72c2bae5b0438d692dc1251b0c8b17595ebdb93c1f974be0a9b1ef26c474649d9c2ae766ed135cf1864020ca100d90102818258208dc60533b5dfa60a530955a696323a2ef4f14e8bc95a8f84cf6c441fea4234275840bb76dd0b00d3b7567437d659c6783245e97250d9b0d94d9136f9e1bc85dcc0b82a8ba9e4c225d6f78fb63f65452f2e6b3ce6ea9f8e637f1d6d499a8da48a1d0df6"
+}
diff --git a/cardano-cli/test/cardano-cli-golden/files/golden/dijkstra/transaction/witness_out b/cardano-cli/test/cardano-cli-golden/files/golden/dijkstra/transaction/witness_out
new file mode 100644
index 0000000000..448d8a2ec1
--- /dev/null
+++ b/cardano-cli/test/cardano-cli-golden/files/golden/dijkstra/transaction/witness_out
@@ -0,0 +1,5 @@
+{
+    "type": "TxWitness DijkstraEra",
+    "description": "Key Witness ShelleyEra",
+    "cborHex": "8258208dc60533b5dfa60a530955a696323a2ef4f14e8bc95a8f84cf6c441fea4234275840bb76dd0b00d3b7567437d659c6783245e97250d9b0d94d9136f9e1bc85dcc0b82a8ba9e4c225d6f78fb63f65452f2e6b3ce6ea9f8e637f1d6d499a8da48a1d0d"
+}