diff --git a/doc/examples/20yearsofLEO_coll.ipynb b/doc/examples/20yearsofLEO_coll.ipynb
index c8e06a7..76952be 100644
--- a/doc/examples/20yearsofLEO_coll.ipynb
+++ b/doc/examples/20yearsofLEO_coll.ipynb
@@ -143,7 +143,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "dyn =  csc.dynamics.simple_earth(J2=True, J3=False, C22S22=True,sun=False,moon=False,SRP=False,drag=True)"
+    "dyn =  csc.dynamics.simple_earth(J2=True, J3=False, J4=False, C22S22=True,sun=False,moon=False,SRP=False,drag=True)"
    ]
   },
   {
diff --git a/doc/examples/oneweekofLEO_conj.ipynb b/doc/examples/oneweekofLEO_conj.ipynb
index 858d814..81a00b2 100644
--- a/doc/examples/oneweekofLEO_conj.ipynb
+++ b/doc/examples/oneweekofLEO_conj.ipynb
@@ -125,7 +125,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "dyn =  csc.dynamics.simple_earth(J2=True, J3 = False, C22S22=True, sun=False,moon=False,SRP=False,drag=True)"
+    "dyn =  csc.dynamics.simple_earth(J2=True, J3 = False, J4=False, C22S22=True, sun=False,moon=False,SRP=False,drag=True)"
    ]
   },
   {