diff --git a/pyproject.toml b/pyproject.toml
index 9a7556be5..c33df9788 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -11,13 +11,13 @@ dependencies = [
     "attrs==21.2.0",
     "setuptools==71.0.0",    # Needed for jsonconversion, it seems
     "jsonconversion==0.2.13", # 1.0.1 tightens the requirements for pytest, and 1.0.0 is broken.
-    "pyparsing==3.0.0",
+    "pyparsing==3.2.3",
 ]
 dynamic = ["version", "description"]
 
 [project.optional-dependencies]
 test = [
-   "pytest==8.3.3"
+   "pytest==8.3.5"
 ]
 benchmarking = [
     "docopt==0.6.2",
@@ -32,7 +32,7 @@ benchmarking = [
 ]
 dev = [
     "tox==3.23.1",
-    "virtualenv==20.28.0"
+    "virtualenv==20.30.0"
 ]
 
 # Build System ################################################################################