diff --git a/CHANGELOG.md b/CHANGELOG.md
index b9d9dc72..0f5d6bcf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,12 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 - **Fixed** for any bug fixes.
 - **Removed** for now removed features.
 
+## [ 1.4.0 ] - [ 2026-06-05 ]
+
+### Added
+- `CV`, `CY`, `DCNOT`, `ECR`, `ISWAP`, `InvSqrtSWAP`, `M`, `MS`, `SqrtISWAP`, and `SqrtSWAP` unitary instructions.
+- Aliases `measureX`, `measureY`, and `measureZ`, for the `measure` instruction along the respective axes.
+
 ## [ 1.3.0 ] - [ 2026-03-23 ]
 
 ### Added
diff --git a/emscripten/test_libqasm.ts b/emscripten/test_libqasm.ts
index 2202b3a9..ebc49a09 100644
--- a/emscripten/test_libqasm.ts
+++ b/emscripten/test_libqasm.ts
@@ -8,7 +8,7 @@ wrapper().then(function(result: any) {
 
     try {
         let output = cqasm.get_version()
-        let expected_output = "1.3.0"
+        let expected_output = "1.4.0"
         console.log("\nThe version of libqasm compiled with emscripten is:", output);
         if (output !== expected_output) {
             console.log("\tExpected output:", expected_output)
diff --git a/include/libqasm/v3x/instruction_set.hpp b/include/libqasm/v3x/instruction_set.hpp
index aa6af2f9..74db90c2 100644
--- a/include/libqasm/v3x/instruction_set.hpp
+++ b/include/libqasm/v3x/instruction_set.hpp
@@ -25,6 +25,7 @@ class InstructionSet {
     InstructionListT single_qubit_named_gate_list;
     InstructionListT two_qubit_named_gate_list;
     InstructionListT non_gate_list;
+    InstructionListT measure_list;
 
     InstructionSet();
 
@@ -34,7 +35,6 @@ class InstructionSet {
     std::string single_qubit_gate_composition_prefix = "1q";
     std::string two_qubit_gate_composition_prefix = "2q";
 
-    std::string measure_name = "measure";
     std::string reset_name = "reset";
     std::string init_name = "init";
     std::string barrier_name = "barrier";
@@ -53,6 +53,7 @@ class InstructionSet {
     [[nodiscard]] const InstructionListT& get_single_qubit_named_gate_list() const;
     [[nodiscard]] const InstructionListT& get_two_qubit_named_gate_list() const;
     [[nodiscard]] const InstructionListT& get_non_gate_list() const;
+    [[nodiscard]] const InstructionListT& get_measure_list() const;
 
     [[nodiscard]] bool is_single_qubit_named_gate(const std::string& name) const;
     [[nodiscard]] bool is_two_qubit_named_gate(const std::string& name) const;
diff --git a/include/libqasm/versioning.hpp b/include/libqasm/versioning.hpp
index 2a0ec6c1..a147618c 100644
--- a/include/libqasm/versioning.hpp
+++ b/include/libqasm/versioning.hpp
@@ -2,7 +2,7 @@
 
 namespace cqasm {
 
-static const char* version{ "1.3.0" };
+static const char* version{ "1.4.0" };
 static const char* release_year{ "2026" };
 
 [[nodiscard]] [[maybe_unused]] static const char* get_version() {
diff --git a/package.json b/package.json
index 907baaef..5836d16a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "libqasm",
-  "version": "1.3.0",
+  "version": "1.4.0",
   "repository": {
     "type": "git",
     "url": "https://github.com/QuTech-Delft/libqasm.git"
diff --git a/src/v3x/instruction_set.cpp b/src/v3x/instruction_set.cpp
index ab62438f..22e6d8a8 100644
--- a/src/v3x/instruction_set.cpp
+++ b/src/v3x/instruction_set.cpp
@@ -21,14 +21,46 @@ InstructionSet::InstructionSet()
     { "CRk", { "i", "QV" } },
     { "CRk", { "i", "VQ" } },
     { "CRk", { "i", "VV" } },
+    { "CV", { std::nullopt, "QQ" } },
+    { "CV", { std::nullopt, "QV" } },
+    { "CV", { std::nullopt, "VQ" } },
+    { "CV", { std::nullopt, "VV" } },
+    { "CY", { std::nullopt, "QQ" } },
+    { "CY", { std::nullopt, "QV" } },
+    { "CY", { std::nullopt, "VQ" } },
+    { "CY", { std::nullopt, "VV" } },
     { "CZ", { std::nullopt, "QQ" } },
     { "CZ", { std::nullopt, "QV" } },
     { "CZ", { std::nullopt, "VQ" } },
     { "CZ", { std::nullopt, "VV" } },
+    { "DCNOT", { std::nullopt, "QQ" } },
+    { "DCNOT", { std::nullopt, "QV" } },
+    { "DCNOT", { std::nullopt, "VQ" } },
+    { "DCNOT", { std::nullopt, "VV" } },
+    { "ECR", { std::nullopt, "QQ" } },
+    { "ECR", { std::nullopt, "QV" } },
+    { "ECR", { std::nullopt, "VQ" } },
+    { "ECR", { std::nullopt, "VV" } },
     { "H", { std::nullopt, "Q" } },
     { "H", { std::nullopt, "V" } },
     { "I", { std::nullopt, "Q" } },
     { "I", { std::nullopt, "V" } },
+    { "InvSqrtSWAP", { std::nullopt, "QQ" } },
+    { "InvSqrtSWAP", { std::nullopt, "QV" } },
+    { "InvSqrtSWAP", { std::nullopt, "VQ" } },
+    { "InvSqrtSWAP", { std::nullopt, "VV" } },
+    { "ISWAP", { std::nullopt, "QQ" } },
+    { "ISWAP", { std::nullopt, "QV" } },
+    { "ISWAP", { std::nullopt, "VQ" } },
+    { "ISWAP", { std::nullopt, "VV" } },
+    { "M", { std::nullopt, "QQ" } },
+    { "M", { std::nullopt, "QV" } },
+    { "M", { std::nullopt, "VQ" } },
+    { "M", { std::nullopt, "VV" } },
+    { "MS", { std::nullopt, "QQ" } },
+    { "MS", { std::nullopt, "QV" } },
+    { "MS", { std::nullopt, "VQ" } },
+    { "MS", { std::nullopt, "VV" } },
     { "mX90", { std::nullopt, "Q" } },
     { "mX90", { std::nullopt, "V" } },
     { "mY90", { std::nullopt, "Q" } },
@@ -47,6 +79,14 @@ InstructionSet::InstructionSet()
     { "S", { std::nullopt, "V" } },
     { "Sdag", { std::nullopt, "Q" } },
     { "Sdag", { std::nullopt, "V" } },
+    { "SqrtISWAP", { std::nullopt, "QQ" } },
+    { "SqrtISWAP", { std::nullopt, "QV" } },
+    { "SqrtISWAP", { std::nullopt, "VQ" } },
+    { "SqrtISWAP", { std::nullopt, "VV" } },
+    { "SqrtSWAP", { std::nullopt, "QQ" } },
+    { "SqrtSWAP", { std::nullopt, "QV" } },
+    { "SqrtSWAP", { std::nullopt, "VQ" } },
+    { "SqrtSWAP", { std::nullopt, "VV" } },
     { "SWAP", { std::nullopt, "QQ" } },
     { "SWAP", { std::nullopt, "QV" } },
     { "SWAP", { std::nullopt, "VQ" } },
@@ -75,6 +115,18 @@ InstructionSet::InstructionSet()
     { "measure", { std::nullopt, "WV" } },
     { "measure", { std::nullopt, "BV" } },
     { "measure", { std::nullopt, "WQ" } },
+    { "measureX", { std::nullopt, "BQ" } },
+    { "measureX", { std::nullopt, "WV" } },
+    { "measureX", { std::nullopt, "BV" } },
+    { "measureX", { std::nullopt, "WQ" } },
+    { "measureY", { std::nullopt, "BQ" } },
+    { "measureY", { std::nullopt, "WV" } },
+    { "measureY", { std::nullopt, "BV" } },
+    { "measureY", { std::nullopt, "WQ" } },
+    { "measureZ", { std::nullopt, "BQ" } },
+    { "measureZ", { std::nullopt, "WV" } },
+    { "measureZ", { std::nullopt, "BV" } },
+    { "measureZ", { std::nullopt, "WQ" } },
     { "measure", { "fff", "BQ" } },
     { "measure", { "fff", "WV" } },
     { "measure", { "fff", "BV" } },
@@ -97,10 +149,13 @@ InstructionSet::InstructionSet()
     "H", "I", "mX90", "mY90", "mZ90", "Rn", "Rx", "Ry", "Rz", "S", "Sdag", "T", "Tdag", "U", "X", "X90", "Y", "Y90", "Z", "Z90"
 }
 , two_qubit_named_gate_list{
-    "CNOT", "CR", "CRk", "CZ", "SWAP"
+    "CNOT", "CR", "CRk", "CV", "CY", "CZ", "DCNOT", "ECR", "InvSqrtSWAP", "ISWAP", "M", "MS", "SqrtISWAP", "SqrtSWAP", "SWAP"
 }
 , non_gate_list{
-    "measure", "reset", "init", "barrier", "wait"
+    "measure", "measureX", "measureY", "measureZ", "reset", "init", "barrier", "wait"
+}
+, measure_list{
+    "measure", "measureX", "measureY", "measureZ"
 }
 {}
 // NOLINTEND
@@ -134,6 +189,10 @@ InstructionSet::InstructionSet()
     return non_gate_list;
 }
 
+[[nodiscard]] const InstructionListT& InstructionSet::get_measure_list() const {
+    return measure_list;
+}
+
 [[nodiscard]] bool InstructionSet::is_single_qubit_named_gate(const std::string& name) const {
     return single_qubit_named_gate_list.contains(name);
 }
@@ -171,7 +230,7 @@ InstructionSet::InstructionSet()
 }
 
 [[nodiscard]] bool InstructionSet::is_measure(const std::string& name) const {
-    return name == measure_name;
+    return measure_list.contains(name);
 }
 
 [[nodiscard]] bool InstructionSet::is_reset(const std::string& name) const {
diff --git a/test/v3x/cpp/test_instruction_set.cpp b/test/v3x/cpp/test_instruction_set.cpp
index 893428ec..07db93cd 100644
--- a/test/v3x/cpp/test_instruction_set.cpp
+++ b/test/v3x/cpp/test_instruction_set.cpp
@@ -18,11 +18,11 @@ class InstructionSetTest : public ::testing::Test {
     const InstructionListT& single_qubit_named_gate_list = instruction_set.get_single_qubit_named_gate_list();
     const InstructionListT& two_qubit_named_gate_list = instruction_set.get_two_qubit_named_gate_list();
 
-    const size_t number_of_gate_map_entries = 60;
-    const size_t number_of_non_gate_map_entries = 16;
+    const size_t number_of_gate_map_entries = 100;
+    const size_t number_of_non_gate_map_entries = 28;
     const size_t number_of_gate_modifier_map_entries = 3;
     const size_t number_of_single_qubit_named_gates = 20;
-    const size_t number_of_two_qubit_named_gates = 5;
+    const size_t number_of_two_qubit_named_gates = 15;
 };
 
 TEST_F(InstructionSetTest, get_instance) {
@@ -105,7 +105,13 @@ TEST_F(InstructionSetTest, is_gate) {
 }
 TEST_F(InstructionSetTest, is_measure) {
     EXPECT_TRUE(instruction_set.is_measure("measure"));
+    EXPECT_TRUE(instruction_set.is_measure("measureX"));
+    EXPECT_TRUE(instruction_set.is_measure("measureY"));
+    EXPECT_TRUE(instruction_set.is_measure("measureZ"));
     EXPECT_FALSE(instruction_set.is_measure("MEASURE"));
+    EXPECT_FALSE(instruction_set.is_measure("measure_z"));
+    EXPECT_FALSE(instruction_set.is_measure("MEASUREz"));
+    EXPECT_FALSE(instruction_set.is_measure("MEASUREZ"));
 }
 TEST_F(InstructionSetTest, is_reset) {
     EXPECT_TRUE(instruction_set.is_reset("reset"));