diff --git a/assembler_tools/hec-assembler-tools/requirements.txt b/assembler_tools/hec-assembler-tools/requirements.txt
index a2ed2e1c..4715ae55 100644
--- a/assembler_tools/hec-assembler-tools/requirements.txt
+++ b/assembler_tools/hec-assembler-tools/requirements.txt
@@ -7,8 +7,8 @@ matplotlib==3.7.1
 networkx==3.0
 numpy==1.24.2
 packaging==23.0
-Pillow==12.1.1
-pytest==8.4.0
+Pillow==12.2.0
+pytest==9.0.3
 python-dateutil==2.8.2
 PyYAML==6.0
 six==1.16.0
diff --git a/p-isa_tools/kerngen/requirements.txt b/p-isa_tools/kerngen/requirements.txt
index ee8caccc..b1ac4b38 100644
--- a/p-isa_tools/kerngen/requirements.txt
+++ b/p-isa_tools/kerngen/requirements.txt
@@ -3,8 +3,8 @@
 pydantic ~= 1.10.22
 
 # for dev / commits
-black ~= 25.1
+black ~= 26.3
 pylint ~= 3.3
 
 # for testing
-pytest ~= 8.3
+pytest ~= 9.0