diff --git a/corsikaio/file.py b/corsikaio/file.py
index 1a63c29..42e5e4e 100644
--- a/corsikaio/file.py
+++ b/corsikaio/file.py
@@ -109,7 +109,7 @@ def __next__(self):
                 raise IOError("File seems to be truncated")
 
         if self.parse_blocks:
-            event_end = parse_event_end(block)[0]
+            event_end = parse_event_end(block,self.version)[0]
             data = self.parse_data_blocks(data_bytes)
             longitudinal = parse_longitudinal(long_bytes)
         else:
diff --git a/corsikaio/subblocks/__init__.py b/corsikaio/subblocks/__init__.py
index 503b4eb..4be0f5c 100644
--- a/corsikaio/subblocks/__init__.py
+++ b/corsikaio/subblocks/__init__.py
@@ -5,7 +5,7 @@
 from .run_end import run_end_dtype
 
 from .event_header import event_header_types
-from .event_end import event_end_dtype
+from .event_end import event_end_types
 
 from .data import cherenkov_photons_dtype, particle_data_dtype
 from .longitudinal import longitudinal_data_dtype
@@ -38,8 +38,8 @@ def parse_event_header(event_header_bytes):
     return np.frombuffer(event_header_bytes, dtype=event_header_types[version])
 
 
-def parse_event_end(event_end_bytes):
-    return np.frombuffer(event_end_bytes, dtype=event_end_dtype)
+def parse_event_end(event_end_bytes,version):
+    return np.frombuffer(event_end_bytes, dtype=event_end_types[float(str(version)[:3])])
 
 
 def get_version(header_bytes, version_pos):
diff --git a/corsikaio/subblocks/event_end.py b/corsikaio/subblocks/event_end.py
index a5f4305..85da66d 100644
--- a/corsikaio/subblocks/event_end.py
+++ b/corsikaio/subblocks/event_end.py
@@ -1,7 +1,9 @@
-from .dtypes import build_dtype, Field
+import warnings
+from collections import defaultdict
 
+from .dtypes import build_dtype, Field
 
-event_end_fields = [
+event_end_fields_65 = [
     Field(1, "event_end", dtype="S4"),
     Field(2, "event_number"),
     Field(3, "n_photons_weighted"),
@@ -17,4 +19,44 @@
     Field(267, "n_em_particles_preshower"),
 ]
 
-event_end_dtype = build_dtype(event_end_fields)
+event_end_fields_7x = [
+    Field(1, "event_end", dtype="S4"),
+    Field(2, "event_number"),
+    Field(3, "n_photons_weighted"),
+    Field(4, "n_electrons_weighted"),
+    Field(5, "n_hadrons_weighted"),
+    Field(6, "n_muons_weighted"),
+    Field(7, "n_particles_written"),
+    Field(256, "longitudinal_fit_parameters", shape=6),
+    Field(262, "chi_square_longitudinal"),
+    Field(263, "n_photons_written"),
+    Field(264, "n_electrons_written"),
+    Field(265, "n_hadrons_written"),
+    Field(266, "n_muons_written"),
+    Field(267, "n_em_particles_preshower"),
+ ]
+
+event_end_dtype_65 = build_dtype(event_end_fields_65)
+event_end_dtype_7x = build_dtype(event_end_fields_7x)
+
+def warn_dtype():
+    warnings.warn("Version unknown, using default event end definition dtype of version 7.x")
+    return event_end_dtype_7x
+
+def warn_fields():
+    warnings.warn("Version unknown, using default event end fields definition of version 7.x")
+    return event_end_fields_7x
+
+event_end_fields = defaultdict(warn_fields)
+event_end_fields[6.5] = event_end_fields_65
+event_end_fields[7.4] = event_end_fields_7x
+event_end_fields[7.5] = event_end_fields_7x
+event_end_fields[7.6] = event_end_fields_7x
+event_end_fields[7.7] = event_end_fields_7x
+
+event_end_types = defaultdict(warn_dtype)
+event_end_types[6.5] = event_end_dtype_65
+event_end_types[7.4] = event_end_dtype_7x
+event_end_types[7.5] = event_end_dtype_7x
+event_end_types[7.6] = event_end_dtype_7x
+event_end_types[7.7] = event_end_dtype_7x
diff --git a/tests/resources/corsika_77500_particle b/tests/resources/corsika_77500_particle
new file mode 100644
index 0000000..01b21ff
Binary files /dev/null and b/tests/resources/corsika_77500_particle differ
diff --git a/tests/test_file.py b/tests/test_file.py
index c695b14..2a9d0e4 100644
--- a/tests/test_file.py
+++ b/tests/test_file.py
@@ -118,3 +118,19 @@ def test_truncated(tmp_path, size):
         with CorsikaParticleFile(path) as f:
             for _ in f:
                 pass
+
+
+def test_longitudinal_parameters():
+    '''Test event end blocks contain longitudinal parameters'''
+    from corsikaio import CorsikaParticleFile
+
+    path = "tests/resources/corsika_77500_particle"
+
+    with CorsikaParticleFile(path) as f:
+        n_events = 0
+        for event in f:
+            n_events += 1
+            assert "longitudinal_fit_parameters" in event.end.dtype.names
+            parameters = event.end["longitudinal_fit_parameters"]
+            np.testing.assert_array_equal(parameters != 0, True)
+        assert n_events == 5
diff --git a/tests/test_units.py b/tests/test_units.py
index d520e0e..61b691d 100644
--- a/tests/test_units.py
+++ b/tests/test_units.py
@@ -25,8 +25,10 @@ def test_new_field():
 
 
 def test_event_end_units():
-
-    assert all([f.unit is None for f in event_end_fields])
+    
+    for version in event_end_fields:
+        
+        assert all([f.unit is None for f in event_end_fields[version]])
 
 
 def test_run_end_units():