diff --git a/poetry.lock b/poetry.lock
index 402fe3f8b..2b92b9d45 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 1.7.1 and should not be changed by hand.
+# This file is automatically @generated by Poetry 1.7.0 and should not be changed by hand.
 
 [[package]]
 name = "accessible-pygments"
@@ -1353,13 +1353,13 @@ files = [
 
 [[package]]
 name = "space-packet-parser"
-version = "4.2.0rc3"
+version = "4.2.0"
 description = "A CCSDS telemetry packet decoding library based on the XTCE packet format description standard."
 optional = false
 python-versions = ">=3.8"
 files = [
-    {file = "space_packet_parser-4.2.0rc3-py3-none-any.whl", hash = "sha256:4d6685a01620b483c8e29a398516ee53b882a8c81728c26bd6cc0f57c0b4f096"},
-    {file = "space_packet_parser-4.2.0rc3.tar.gz", hash = "sha256:b349981832ac2edf1fa8213639870ba1cbabd0f292a9ad3009da9790350d9517"},
+    {file = "space_packet_parser-4.2.0-py3-none-any.whl", hash = "sha256:3563f700634d11384686e5a80b86e7f51717c2332ad9e817d62d5542fb920e6d"},
+    {file = "space_packet_parser-4.2.0.tar.gz", hash = "sha256:5afe6ed49a84884e236aa19a1a96d8976796bbbbf85e8f9b063ebd8a74bc024c"},
 ]
 
 [package.dependencies]
@@ -1699,4 +1699,4 @@ tools = ["openpyxl", "pandas"]
 [metadata]
 lock-version = "2.0"
 python-versions = ">=3.9,<4"
-content-hash = "faf45bc2caa9f511612474cd14bfd3cbc3d9e59baf36d9e796542aac17f4b9d6"
+content-hash = "cf68b57df0a77b328a7fc76d00e7c33b809f10fa41cbb63cf9f2cc6f4985b0f7"
diff --git a/pyproject.toml b/pyproject.toml
index 439972011..cd2747377 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -33,7 +33,7 @@ bitstring = ">=4.0.1"
 cdflib = "==1.2.6"
 imap-data-access = ">=0.5.0"
 python = ">=3.9,<4"
-space_packet_parser = ">=4.2.0rc3"
+space_packet_parser = ">=4.2.0"
 spiceypy = ">=6.0.0"
 xarray = '>=2023.0.0'