diff --git a/book/02-04.ipynb b/book/02-04.ipynb
index 995a763..60fea05 100644
--- a/book/02-04.ipynb
+++ b/book/02-04.ipynb
@@ -4,7 +4,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "# 8. Applying fixed transforms"
+    "# 8. Fixed transforms"
    ]
   },
   {
diff --git a/book/03-02.ipynb b/book/03-02.ipynb
index 1e90582..9697616 100644
--- a/book/03-02.ipynb
+++ b/book/03-02.ipynb
@@ -4,7 +4,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "# 10. Further with samplers"
+    "# 10. Using samplers"
    ]
   },
   {
diff --git a/book/03-03.ipynb b/book/03-03.ipynb
index d6570ef..19a62a8 100644
--- a/book/03-03.ipynb
+++ b/book/03-03.ipynb
@@ -4,7 +4,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "# 11. Applying random transforms"
+    "# 11. Random transforms"
    ]
   },
   {