diff --git a/src/pyscal/gasoil.py b/src/pyscal/gasoil.py
index 6993b8b9..5630aba6 100644
--- a/src/pyscal/gasoil.py
+++ b/src/pyscal/gasoil.py
@@ -1035,7 +1035,7 @@ def plotkrgkrog(
             useax = mpl_ax
         if logyscale:
             useax.set_yscale("log")
-            useax.set_ylim([1e-8, 1])
+            useax.set_ylim((1e-8, 1))
         self.table.plot(
             ax=useax,
             x="SG",
diff --git a/src/pyscal/gaswater.py b/src/pyscal/gaswater.py
index 716623db..5ceac21c 100644
--- a/src/pyscal/gaswater.py
+++ b/src/pyscal/gaswater.py
@@ -332,7 +332,7 @@ def plotkrwkrg(
             useax = mpl_ax
         if logyscale:
             useax.set_yscale("log")
-            useax.set_ylim([1e-8, 1])
+            useax.set_ylim((1e-8, 1))
         self.wateroil.table.plot(
             ax=useax,
             x="SW",
diff --git a/src/pyscal/wateroil.py b/src/pyscal/wateroil.py
index 61c55385..fc7e6596 100644
--- a/src/pyscal/wateroil.py
+++ b/src/pyscal/wateroil.py
@@ -1355,7 +1355,7 @@ def plotpc(
             useax = mpl_ax
         if logyscale:
             useax.set_yscale("log")
-            useax.set_ylim([1e-6, 100])
+            useax.set_ylim((1e-6, 100))
         self.table.plot(
             ax=useax,
             x="SW",
@@ -1397,7 +1397,7 @@ def plotkrwkrow(
             useax = mpl_ax
         if logyscale:
             useax.set_yscale("log")
-            useax.set_ylim([1e-8, 1])
+            useax.set_ylim((1e-8, 1))
         self.table.plot(
             ax=useax,
             x="SW",