diff --git a/test/tests/concrete_ASR_validation/asr_validation.i b/test/tests/concrete_ASR_validation/asr_validation.i
index 5edac7d7..7e58b61d 100644
--- a/test/tests/concrete_ASR_validation/asr_validation.i
+++ b/test/tests/concrete_ASR_validation/asr_validation.i
@@ -160,7 +160,7 @@
 [Functions]
   [./strain_function]
     type = ParsedFunction
-    value = 1.24e-3*(1-exp(-t/86400/8.68))/(1+exp((8.68-t/86400)/16.22))
+    expression = 1.24e-3*(1-exp(-t/86400/8.68))/(1+exp((8.68-t/86400)/16.22))
   [../]
 []
 
diff --git a/test/tests/concrete_anisotropic_eigenstrain/concrete_anisotropic_eigenstrain.i b/test/tests/concrete_anisotropic_eigenstrain/concrete_anisotropic_eigenstrain.i
index a0c8f19d..4bda446d 100644
--- a/test/tests/concrete_anisotropic_eigenstrain/concrete_anisotropic_eigenstrain.i
+++ b/test/tests/concrete_anisotropic_eigenstrain/concrete_anisotropic_eigenstrain.i
@@ -63,7 +63,7 @@
 [Functions]
   [./expansion_vs_time]
     type = ParsedFunction
-    value = 'max(0, t - 0.0001)'
+    expression = 'max(0, t - 0.0001)'
   [../]
 []
 
diff --git a/test/tests/concrete_expansion_microcracking/concrete_expansion_microcracking.i b/test/tests/concrete_expansion_microcracking/concrete_expansion_microcracking.i
index a3625e00..bfd40bac 100644
--- a/test/tests/concrete_expansion_microcracking/concrete_expansion_microcracking.i
+++ b/test/tests/concrete_expansion_microcracking/concrete_expansion_microcracking.i
@@ -71,7 +71,7 @@
 [Functions]
   [./expansion_vs_time]
     type = ParsedFunction
-    value = 'max(0, t - 0.0001)'
+    expression = 'max(0, t - 0.0001)'
   [../]
 []
 
diff --git a/test/tests/concrete_expansion_microcracking/tests b/test/tests/concrete_expansion_microcracking/tests
index 54ab47bd..9e9931c0 100644
--- a/test/tests/concrete_expansion_microcracking/tests
+++ b/test/tests/concrete_expansion_microcracking/tests
@@ -21,7 +21,7 @@
       input = 'concrete_expansion_microcracking.i'
       csvdiff = 'concrete_expansion_microcracking_shrinkage_out.csv'
       abs_zero = 1e-5
-      cli_args = 'Functions/expansion_vs_time/value="-max(0, t - 0.0001)" '
+      cli_args = 'Functions/expansion_vs_time/expression="-max(0, t - 0.0001)" '
                  'Materials/microcracking/expansion_stress_limit=10e6 '
                  'Materials/microcracking/eigenstrain_factor=-1.0 '
                  'Outputs/file_base=concrete_expansion_microcracking_shrinkage_out'
diff --git a/test/tests/concrete_logcreep/concrete_logcreep_humidity.i b/test/tests/concrete_logcreep/concrete_logcreep_humidity.i
index a170e7a7..7f1f344f 100644
--- a/test/tests/concrete_logcreep/concrete_logcreep_humidity.i
+++ b/test/tests/concrete_logcreep/concrete_logcreep_humidity.i
@@ -32,7 +32,7 @@
 [Functions]
   [./humidity_function]
     type = ParsedFunction
-    value = 0.5
+    expression = 0.5
   [../]
 []
 
diff --git a/test/tests/concrete_logcreep/concrete_logcreep_temp.i b/test/tests/concrete_logcreep/concrete_logcreep_temp.i
index f1b787e3..83fa6ce3 100644
--- a/test/tests/concrete_logcreep/concrete_logcreep_temp.i
+++ b/test/tests/concrete_logcreep/concrete_logcreep_temp.i
@@ -34,7 +34,7 @@
 [Functions]
   [./temp_function]
     type = ParsedFunction
-    value = 60
+    expression = 60
   [../]
 []
 
diff --git a/test/tests/mazars_damage/mazars.i b/test/tests/mazars_damage/mazars.i
index afad211b..7902fe8f 100644
--- a/test/tests/mazars_damage/mazars.i
+++ b/test/tests/mazars_damage/mazars.i
@@ -94,11 +94,11 @@
 [Functions]
   [push]
     type = ParsedFunction
-    value = '-t'
+    expression = '-t'
   []
   [pull]
     type = ParsedFunction
-    value = 't'
+    expression = 't'
   []
 []
 
diff --git a/test/tests/neml_lagrangian_jacobian/jactest.i b/test/tests/neml_lagrangian_jacobian/jactest.i
index 0f81ac02..82ed3759 100644
--- a/test/tests/neml_lagrangian_jacobian/jactest.i
+++ b/test/tests/neml_lagrangian_jacobian/jactest.i
@@ -55,15 +55,15 @@
 [Functions]
   [pullx]
     type = ParsedFunction
-    value = '4000 * t'
+    expression = '4000 * t'
   []
   [pully]
     type = ParsedFunction
-    value = '-2000 * t'
+    expression = '-2000 * t'
   []
   [pullz]
     type = ParsedFunction
-    value = '3000 * t'
+    expression = '3000 * t'
   []
 []
 
diff --git a/test/tests/neml_regression/neml_regression.i b/test/tests/neml_regression/neml_regression.i
index 8ae2a1c4..d6678723 100644
--- a/test/tests/neml_regression/neml_regression.i
+++ b/test/tests/neml_regression/neml_regression.i
@@ -124,21 +124,21 @@
   []
   [u_x]
     type = ParsedFunction
-    vars = 'strain_xx strain_xy strain_xz'
-    vals = 'strain_xx strain_xy strain_xz'
-    value = 'x*strain_xx + 1/sqrt(2)*y*strain_xy + 1/sqrt(2)*z*strain_xz'
+    symbol_names = 'strain_xx strain_xy strain_xz'
+    symbol_values = 'strain_xx strain_xy strain_xz'
+    expression = 'x*strain_xx + 1/sqrt(2)*y*strain_xy + 1/sqrt(2)*z*strain_xz'
   []
   [u_y]
     type = ParsedFunction
-    vars = 'strain_yy strain_xy strain_yz'
-    vals = 'strain_yy strain_xy strain_yz'
-    value = 'y*strain_yy + 1/sqrt(2)*x*strain_xy + 1/sqrt(2)*z*strain_yz'
+    symbol_names = 'strain_yy strain_xy strain_yz'
+    symbol_values = 'strain_yy strain_xy strain_yz'
+    expression = 'y*strain_yy + 1/sqrt(2)*x*strain_xy + 1/sqrt(2)*z*strain_yz'
   []
   [u_z]
     type = ParsedFunction
-    vars = 'strain_zz strain_xz strain_yz'
-    vals = 'strain_zz strain_xz strain_yz'
-    value = 'z*strain_zz + 1/sqrt(2)*x*strain_xz + 1/sqrt(2)*y*strain_yz'
+    symbol_names = 'strain_zz strain_xz strain_yz'
+    symbol_values = 'strain_zz strain_xz strain_yz'
+    expression = 'z*strain_zz + 1/sqrt(2)*x*strain_xz + 1/sqrt(2)*y*strain_yz'
   []
 []
 
diff --git a/test/tests/neml_regression_lagrangian/neml_regression.i b/test/tests/neml_regression_lagrangian/neml_regression.i
index a9180420..51679d99 100644
--- a/test/tests/neml_regression_lagrangian/neml_regression.i
+++ b/test/tests/neml_regression_lagrangian/neml_regression.i
@@ -128,21 +128,21 @@
   []
   [u_x]
     type = ParsedFunction
-    vars = 'strain_xx strain_xy strain_xz'
-    vals = 'strain_xx strain_xy strain_xz'
-    value = 'x*strain_xx + 1/sqrt(2)*y*strain_xy + 1/sqrt(2)*z*strain_xz'
+    symbol_names = 'strain_xx strain_xy strain_xz'
+    symbol_values = 'strain_xx strain_xy strain_xz'
+    expression = 'x*strain_xx + 1/sqrt(2)*y*strain_xy + 1/sqrt(2)*z*strain_xz'
   []
   [u_y]
     type = ParsedFunction
-    vars = 'strain_yy strain_xy strain_yz'
-    vals = 'strain_yy strain_xy strain_yz'
-    value = 'y*strain_yy + 1/sqrt(2)*x*strain_xy + 1/sqrt(2)*z*strain_yz'
+    symbol_names = 'strain_yy strain_xy strain_yz'
+    symbol_values = 'strain_yy strain_xy strain_yz'
+    expression = 'y*strain_yy + 1/sqrt(2)*x*strain_xy + 1/sqrt(2)*z*strain_yz'
   []
   [u_z]
     type = ParsedFunction
-    vars = 'strain_zz strain_xz strain_yz'
-    vals = 'strain_zz strain_xz strain_yz'
-    value = 'z*strain_zz + 1/sqrt(2)*x*strain_xz + 1/sqrt(2)*y*strain_yz'
+    symbol_names = 'strain_zz strain_xz strain_yz'
+    symbol_values = 'strain_zz strain_xz strain_yz'
+    expression = 'z*strain_zz + 1/sqrt(2)*x*strain_xz + 1/sqrt(2)*y*strain_yz'
   []
 []
 
diff --git a/test/tests/steel_creep_damage_oh/ad_steel_creep_damage.i b/test/tests/steel_creep_damage_oh/ad_steel_creep_damage.i
index 4d2af940..6c3b1ca1 100644
--- a/test/tests/steel_creep_damage_oh/ad_steel_creep_damage.i
+++ b/test/tests/steel_creep_damage_oh/ad_steel_creep_damage.i
@@ -112,7 +112,7 @@
 [Functions]
   [pull]
     type = ParsedFunction
-    value = '5*t'
+    expression = '5*t'
   []
 []
 
diff --git a/test/tests/steel_creep_damage_oh/ad_steel_creep_damage_2d.i b/test/tests/steel_creep_damage_oh/ad_steel_creep_damage_2d.i
index 4b61c7ec..db1ac1be 100644
--- a/test/tests/steel_creep_damage_oh/ad_steel_creep_damage_2d.i
+++ b/test/tests/steel_creep_damage_oh/ad_steel_creep_damage_2d.i
@@ -105,7 +105,7 @@
 [Functions]
   [pull]
     type = ParsedFunction
-    value = '5*t'
+    expression = '5*t'
   []
 []
 
diff --git a/test/tests/steel_creep_damage_oh/steel_creep_damage.i b/test/tests/steel_creep_damage_oh/steel_creep_damage.i
index ed4eaef5..c4ef0805 100644
--- a/test/tests/steel_creep_damage_oh/steel_creep_damage.i
+++ b/test/tests/steel_creep_damage_oh/steel_creep_damage.i
@@ -111,7 +111,7 @@
 [Functions]
   [pull]
     type = ParsedFunction
-    value = '5*t'
+    expression = '5*t'
   []
 []
 
diff --git a/test/tests/steel_creep_damage_oh/steel_creep_damage_2d.i b/test/tests/steel_creep_damage_oh/steel_creep_damage_2d.i
index c1c3b5b5..6bb7f219 100644
--- a/test/tests/steel_creep_damage_oh/steel_creep_damage_2d.i
+++ b/test/tests/steel_creep_damage_oh/steel_creep_damage_2d.i
@@ -104,7 +104,7 @@
 [Functions]
   [pull]
     type = ParsedFunction
-    value = '5*t'
+    expression = '5*t'
   []
 []