diff --git a/test_package/nbconvert/env/darwin.txt b/test_package/nbconvert/env/darwin.txt
index a638deb..3f504bd 100644
--- a/test_package/nbconvert/env/darwin.txt
+++ b/test_package/nbconvert/env/darwin.txt
@@ -40,7 +40,7 @@ nbformat==5.10.4
     # via
     #   nbclient
     #   nbconvert
-packaging==25.0
+packaging==26.0
     # via nbconvert
 pandocfilters==1.5.1
     # via nbconvert
diff --git a/test_package/nbconvert/env/linux.txt b/test_package/nbconvert/env/linux.txt
index a638deb..3f504bd 100644
--- a/test_package/nbconvert/env/linux.txt
+++ b/test_package/nbconvert/env/linux.txt
@@ -40,7 +40,7 @@ nbformat==5.10.4
     # via
     #   nbclient
     #   nbconvert
-packaging==25.0
+packaging==26.0
     # via nbconvert
 pandocfilters==1.5.1
     # via nbconvert
diff --git a/test_package/nbconvert/env/win32.txt b/test_package/nbconvert/env/win32.txt
index 14abe46..3e36d44 100644
--- a/test_package/nbconvert/env/win32.txt
+++ b/test_package/nbconvert/env/win32.txt
@@ -40,7 +40,7 @@ nbformat==5.10.4
     # via
     #   nbclient
     #   nbconvert
-packaging==25.0
+packaging==26.0
     # via nbconvert
 pandocfilters==1.5.1
     # via nbconvert