diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 559e1b9..84ae294 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,7 +15,7 @@ jobs:
     strategy:
       matrix:
         python-version: ["3.8"]
-        corsika-version: ["77500"]
+        corsika-version: ["77550"]
         os: [ubuntu-latest]
     runs-on: ${{ matrix.os }}
     steps:
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 4766d9a..b1a394d 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -15,7 +15,7 @@ jobs:
       matrix:
         python-version: ["3.11"]
         poetry-version: ["1.3"]
-        corsika-version: ["77500"]
+        corsika-version: ["77550"]
         os: [ubuntu-latest]
     runs-on: ${{ matrix.os }}
     permissions:
diff --git a/panama/read.py b/panama/read.py
index 3ab62eb..16fb5d1 100644
--- a/panama/read.py
+++ b/panama/read.py
@@ -386,6 +386,8 @@ def add_mother_columns(
         else False
         for pdgid in pdgids
     }
+    # explicitly force an invalid PDGID to not be charm
+    has_charm[PDGID_ERROR_VAL] = False
 
     # this follows the MCEq definition
     lifetimes = {
@@ -395,6 +397,8 @@ def add_mother_columns(
     for pdgid in lifetimes:
         if lifetimes[pdgid] is None:
             lifetimes[pdgid] = 0
+    # explicitly force invalid PDGID to have infinite lifetime
+    lifetimes[PDGID_ERROR_VAL] = inf
 
     is_resonance = {
         pdgid: "*" in Particle.from_pdgid(pdgid).name
@@ -402,6 +406,8 @@ def add_mother_columns(
         else False
         for pdgid in pdgids
     }
+    # explicitly force an invalid PDGID to not be a resonance
+    is_resonance[PDGID_ERROR_VAL] = False
 
     df_particles["mother_lifetimes"] = df_particles["mother_pdgid"].map(
         lifetimes, na_action=None
diff --git a/pdm.lock b/pdm.lock
index feb87e0..0e10def 100644
--- a/pdm.lock
+++ b/pdm.lock
@@ -4,8 +4,11 @@
 [metadata]
 groups = ["default", "dev", "hdf"]
 strategy = ["cross_platform"]
-lock_version = "4.4.1"
-content_hash = "sha256:841616f19ebdf6cfc93ad4b8292b98d3747ecd22d145988992325f2b0321245a"
+lock_version = "4.5.0"
+content_hash = "sha256:e2bcaec8f930c4c515ce93e885c5b0128ee92cb8db45f7272db99c43c742ac96"
+
+[[metadata.targets]]
+requires_python = ">=3.8,<3.12"
 
 [[package]]
 name = "accessible-pygments"
@@ -61,6 +64,7 @@ requires_python = ">=3.7"
 summary = "Argon2 for Python"
 dependencies = [
     "argon2-cffi-bindings",
+    "typing-extensions; python_version < \"3.8\"",
 ]
 files = [
     {file = "argon2_cffi-23.1.0-py3-none-any.whl", hash = "sha256:c670642b78ba29641818ab2e68bd4e6a78ba53b7eff7b4c3815ae16abf91c7ea"},
@@ -119,6 +123,7 @@ version = "2.4.1"
 summary = "Annotate AST trees with source code positions"
 dependencies = [
     "six>=1.12.0",
+    "typing; python_version < \"3.5\"",
 ]
 files = [
     {file = "asttokens-2.4.1-py2.py3-none-any.whl", hash = "sha256:051ed49c3dcae8913ea7cd08e46a606dba30b79993209636c4875bc1d637bc24"},
@@ -143,6 +148,9 @@ name = "attrs"
 version = "23.1.0"
 requires_python = ">=3.7"
 summary = "Classes Without Boilerplate"
+dependencies = [
+    "importlib-metadata; python_version < \"3.8\"",
+]
 files = [
     {file = "attrs-23.1.0-py3-none-any.whl", hash = "sha256:1f28b4522cdc2fb4256ac1a020c78acf9cba2c6b461ccd2c126f3aa8e8335d04"},
     {file = "attrs-23.1.0.tar.gz", hash = "sha256:6279836d581513a26f1bf235f9acd333bc9115683f14f7e8fae46c98fc50e015"},
@@ -155,6 +163,7 @@ requires_python = ">=3.7"
 summary = "Internationalization utilities"
 dependencies = [
     "pytz>=2015.7; python_version < \"3.9\"",
+    "setuptools; python_version >= \"3.12\"",
 ]
 files = [
     {file = "Babel-2.13.1-py3-none-any.whl", hash = "sha256:7077a4984b02b6727ac10f1f7294484f737443d7e2e66c5e4380e41a3ae0b4ed"},
@@ -194,6 +203,7 @@ dependencies = [
     "pathspec>=0.9.0",
     "platformdirs>=2",
     "tomli>=1.1.0; python_full_version < \"3.11.0a7\"",
+    "typed-ast>=1.4.2; python_version < \"3.8\" and implementation_name == \"cpython\"",
     "typing-extensions>=3.10.0.0; python_version < \"3.10\"",
 ]
 files = [
@@ -405,6 +415,7 @@ requires_python = ">=3.7"
 summary = "Composable command line interface toolkit"
 dependencies = [
     "colorama; platform_system == \"Windows\"",
+    "importlib-metadata; python_version < \"3.8\"",
 ]
 files = [
     {file = "click-8.1.7-py3-none-any.whl", hash = "sha256:ae74fb96c20a0277a1d615f1e4d73c8414f5a98db8b799a7931d1582f3390c28"},
@@ -451,6 +462,7 @@ requires_python = ">=3.8"
 summary = "Python library for calculating contours of 2D quadrilateral grids"
 dependencies = [
     "numpy<2.0,>=1.16; python_version <= \"3.11\"",
+    "numpy<2.0,>=1.26.0rc1; python_version >= \"3.12\"",
 ]
 files = [
     {file = "contourpy-1.1.1-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:46e24f5412c948d81736509377e255f6040e94216bf1a9b5ea1eaa9d29f6ec1b"},
@@ -790,6 +802,9 @@ name = "fqdn"
 version = "1.5.1"
 requires_python = ">=2.7, !=3.0, !=3.1, !=3.2, !=3.3, !=3.4, <4"
 summary = "Validates fully-qualified domain names against RFC 1123, so that they are acceptable to modern bowsers"
+dependencies = [
+    "cached-property>=1.3.0; python_version < \"3.8\"",
+]
 files = [
     {file = "fqdn-1.5.1-py3-none-any.whl", hash = "sha256:3a179af3761e4df6eb2e026ff9e1a3033d3587bf980a0b1b2e1e5d08d7358014"},
     {file = "fqdn-1.5.1.tar.gz", hash = "sha256:105ed3677e767fb5ca086a0c1f4bb66ebc3c100be518f0e0d755d9eae164d89f"},
@@ -841,6 +856,7 @@ version = "6.8.0"
 requires_python = ">=3.8"
 summary = "Read metadata from Python packages"
 dependencies = [
+    "typing-extensions>=3.6.4; python_version < \"3.8\"",
     "zipp>=0.5",
 ]
 files = [
@@ -1205,6 +1221,9 @@ name = "kiwisolver"
 version = "1.4.5"
 requires_python = ">=3.7"
 summary = "A fast implementation of the Cassowary constraint solver"
+dependencies = [
+    "typing-extensions; python_version < \"3.8\"",
+]
 files = [
     {file = "kiwisolver-1.4.5-cp310-cp310-macosx_10_9_universal2.whl", hash = "sha256:05703cf211d585109fcd72207a31bb170a0f22144d68298dc5e61b3c946518af"},
     {file = "kiwisolver-1.4.5-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:146d14bebb7f1dc4d5fbf74f8a6cb15ac42baadee8912eb84ac0b3b2a3dc6ac3"},
@@ -1777,6 +1796,9 @@ name = "overrides"
 version = "7.4.0"
 requires_python = ">=3.6"
 summary = "A decorator to automatically detect mismatch when overriding a method."
+dependencies = [
+    "typing; python_version < \"3.5\"",
+]
 files = [
     {file = "overrides-7.4.0-py3-none-any.whl", hash = "sha256:3ad24583f86d6d7a49049695efe9933e67ba62f0c7625d53c59fa832ce4b8b7d"},
     {file = "overrides-7.4.0.tar.gz", hash = "sha256:9502a3cca51f4fac40b5feca985b6703a5c1f6ad815588a7ca9e285b9dca6757"},
@@ -1895,6 +1917,9 @@ files = [
 name = "pickleshare"
 version = "0.7.5"
 summary = "Tiny 'shelve'-like database with concurrency support"
+dependencies = [
+    "pathlib2; python_version in \"2.6 2.7 3.2 3.3\"",
+]
 files = [
     {file = "pickleshare-0.7.5-py2.py3-none-any.whl", hash = "sha256:9649af414d74d4df115d5d718f82acb59c9d418196b7b4290ed47a12ce62df56"},
     {file = "pickleshare-0.7.5.tar.gz", hash = "sha256:87683d47965c1da65cdacaf31c8441d12b8044cdec9aca500cd78fc2c683afca"},
@@ -1968,6 +1993,9 @@ name = "platformdirs"
 version = "3.11.0"
 requires_python = ">=3.7"
 summary = "A small Python package for determining appropriate platform-specific dirs, e.g. a \"user data dir\"."
+dependencies = [
+    "typing-extensions>=4.7.1; python_version < \"3.8\"",
+]
 files = [
     {file = "platformdirs-3.11.0-py3-none-any.whl", hash = "sha256:e9d171d00af68be50e9202731309c4e658fd8bc76f55c11c7dd760d023bda68e"},
     {file = "platformdirs-3.11.0.tar.gz", hash = "sha256:cf8ee52a3afdb965072dcc652433e0c7e3e40cf5ea1477cd4b3b1d2eb75495b3"},
@@ -2123,6 +2151,7 @@ summary = "pytest: simple powerful testing with Python"
 dependencies = [
     "colorama; sys_platform == \"win32\"",
     "exceptiongroup>=1.0.0rc8; python_version < \"3.11\"",
+    "importlib-metadata>=0.12; python_version < \"3.8\"",
     "iniconfig",
     "packaging",
     "pluggy<2.0,>=0.12",
@@ -2980,6 +3009,7 @@ summary = "Virtual Python Environment builder"
 dependencies = [
     "distlib<1,>=0.3.7",
     "filelock<4,>=3.12.2",
+    "importlib-metadata>=6.6; python_version < \"3.8\"",
     "platformdirs<4,>=3.9.1",
 ]
 files = [
@@ -2991,6 +3021,9 @@ files = [
 name = "wcwidth"
 version = "0.2.9"
 summary = "Measures the displayed width of unicode strings in a terminal"
+dependencies = [
+    "backports-functools-lru-cache>=1.2.1; python_version < \"3.2\"",
+]
 files = [
     {file = "wcwidth-0.2.9-py2.py3-none-any.whl", hash = "sha256:9a929bd8380f6cd9571a968a9c8f4353ca58d7cd812a4822bba831f8d685b223"},
     {file = "wcwidth-0.2.9.tar.gz", hash = "sha256:a675d1a4a2d24ef67096a04b85b02deeecd8e226f57b5e3a72dbb9ed99d27da8"},
diff --git a/tests/files/compare/DAT000000 b/tests/files/compare/DAT000000
index 7a968c9..60e74b4 100644
Binary files a/tests/files/compare/DAT000000 and b/tests/files/compare/DAT000000 differ
diff --git a/tests/files/noEHIST/DAT101001 b/tests/files/noEHIST/DAT101001
new file mode 100644
index 0000000..9dff7a0
Binary files /dev/null and b/tests/files/noEHIST/DAT101001 differ
diff --git a/tests/test_cli.py b/tests/test_cli.py
index 8e0af46..f0bf483 100644
--- a/tests/test_cli.py
+++ b/tests/test_cli.py
@@ -5,8 +5,8 @@
 from panama import read_DAT
 import pytest
 
-CORSIKA_VERSION = "corsika-77500"
-CORSIKA_EXECUTABLE = "corsika77500Linux_SIBYLL_urqmd"
+CORSIKA_VERSION = "corsika-77550"
+CORSIKA_EXECUTABLE = "corsika77550Linux_SIBYLL_urqmd"
 
 def test_cli_missing_executable(
     test_file_path=Path(__file__).parent / "files" / "example_corsika.template",
diff --git a/tests/test_read.py b/tests/test_read.py
index aa9bb1e..7a75f6f 100644
--- a/tests/test_read.py
+++ b/tests/test_read.py
@@ -15,6 +15,7 @@
 
 SINGLE_TEST_FILE = Path(__file__).parent / "files" / "DAT000000"
 GLOB_TEST_FILE = Path(__file__).parent / "files" / "DAT*"
+NOEHIST_TEST_FILE = Path(__file__).parent / "files" / "noEHIST" / "DAT101001"
 
 
 def test_noparse(test_file_path=SINGLE_TEST_FILE):
@@ -61,6 +62,13 @@ def check_eq(file, df_run, df_event, particles, skip_mother=False):
                 num += 1
 
 
+def test_noehist(test_file_path=NOEHIST_TEST_FILE):
+    # This used to fail (see issue #103)
+    df_run, df_event, df = panama.read_DAT(glob=test_file_path, mother_columns=True)
+
+    check_eq(test_file_path, df_run, df_event, df, skip_mother=False)
+
+
 def test_noadd(test_file_path=SINGLE_TEST_FILE):
     with pytest.raises(ValueError, match="requires"):
         df_run, df_event, particles = panama.read_DAT(
diff --git a/tests/test_run.py b/tests/test_run.py
index 2ac234d..2680a8d 100644
--- a/tests/test_run.py
+++ b/tests/test_run.py
@@ -9,8 +9,8 @@
 import pytest
 import numpy as np
 
-CORSIKA_VERSION = "corsika-77500"
-CORSIKA_EXECUTABLE = "corsika77500Linux_SIBYLL_urqmd"
+CORSIKA_VERSION = "corsika-77550"
+CORSIKA_EXECUTABLE = "corsika77550Linux_SIBYLL_urqmd"
 
 
 def test_corsika_runner_cleanup(