diff --git a/githooks/commit-msg b/githooks/commit-msg
index 146aed08dfb9..dfb1b02da454 100755
--- a/githooks/commit-msg
+++ b/githooks/commit-msg
@@ -52,7 +52,7 @@ IFS='
 notes=($($grep -iE '^release note' "$1"))
 
 # Set this to 1 to require a release justification note.
-require_justification=0
+require_justification=1
 justification=($($grep -iE '^release justification: \S+' "$1"))
 
 IFS=$saveIFS
diff --git a/githooks/prepare-commit-msg b/githooks/prepare-commit-msg
index 1a24e426bd2a..cb69ded5ce23 100755
--- a/githooks/prepare-commit-msg
+++ b/githooks/prepare-commit-msg
@@ -2,7 +2,7 @@
 #
 # Prepare the commit message by adding a release note.
 
-require_justification=0
+require_justification=1
 set -euo pipefail
 
 if [[ "${2-}" = "message" ]]; then