diff --git a/projects/botan/project.yaml b/projects/botan/project.yaml
index 7541722d8..917a7984c 100644
--- a/projects/botan/project.yaml
+++ b/projects/botan/project.yaml
@@ -7,3 +7,6 @@ sanitizers:
   - address
   - memory
   - undefined
+fuzzing_engines:
+  - libfuzzer
+  - afl
diff --git a/projects/irssi/project.yaml b/projects/irssi/project.yaml
index ec41cd292..b643cd1af 100644
--- a/projects/irssi/project.yaml
+++ b/projects/irssi/project.yaml
@@ -8,3 +8,6 @@ sanitizers:
   - memory:
      experimental: True
   - undefined
+fuzzing_engines:
+  - libfuzzer
+  - afl
diff --git a/projects/libass/project.yaml b/projects/libass/project.yaml
index 7cd9523e4..bdf701cbd 100644
--- a/projects/libass/project.yaml
+++ b/projects/libass/project.yaml
@@ -10,3 +10,6 @@ sanitizers:
   - memory:
      experimental: True
   - undefined
+fuzzing_engines:
+  - libfuzzer
+  - afl
diff --git a/projects/libchewing/project.yaml b/projects/libchewing/project.yaml
index acb94b1fe..08036fb67 100644
--- a/projects/libchewing/project.yaml
+++ b/projects/libchewing/project.yaml
@@ -1,2 +1,5 @@
 homepage: "http://chewing.im/"
 disabled: true
+fuzzing_engines:
+  - libfuzzer
+  - afl
diff --git a/projects/nss/project.yaml b/projects/nss/project.yaml
index 6dab3c54a..c65abe5e9 100644
--- a/projects/nss/project.yaml
+++ b/projects/nss/project.yaml
@@ -2,3 +2,6 @@ homepage: "https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS"
 primary_contact: "ttaubert@mozilla.com"
 auto_ccs:
 - "fkiefer@mozilla.com"
+fuzzing_engines:
+  - libfuzzer
+  - afl