diff --git a/datascience-notebook/Dockerfile b/datascience-notebook/Dockerfile
index 79b8fd5b9..c930a9008 100644
--- a/datascience-notebook/Dockerfile
+++ b/datascience-notebook/Dockerfile
@@ -66,7 +66,7 @@ RUN conda install --quiet --yes \
     'r-nycflights13=1.0*' \
     'r-randomforest=4.6*' \
     'r-rcurl=1.98*' \
-    'r-rmarkdown=2.8*' \
+    'r-rmarkdown=2.9*' \
     'r-rodbc=1.3*' \
     'r-rsqlite=2.2*' \
     'r-shiny=1.6*' \
diff --git a/r-notebook/Dockerfile b/r-notebook/Dockerfile
index fa366704d..20053c470 100644
--- a/r-notebook/Dockerfile
+++ b/r-notebook/Dockerfile
@@ -37,7 +37,7 @@ RUN conda install --quiet --yes \
     'r-nycflights13=1.0*' \
     'r-randomforest=4.6*' \
     'r-rcurl=1.98*' \
-    'r-rmarkdown=2.8*' \
+    'r-rmarkdown=2.9*' \
     'r-rodbc=1.3*' \
     'r-rsqlite=2.2*' \
     'r-shiny=1.6*' \