diff --git a/.github/workflows/cov.yml b/.github/workflows/cov.yml
index 678a79e7..d9af4688 100644
--- a/.github/workflows/cov.yml
+++ b/.github/workflows/cov.yml
@@ -9,7 +9,7 @@ on:
       - 'doc/**'
       - 'examples/**'
       - 'tools/**'
-      - *.md
+      - '*.md'
 
 env:
   B2_OPTS: -q -j2 warnings-as-errors=on
diff --git a/.github/workflows/fast.yml b/.github/workflows/fast.yml
index 4780f4fc..f54a97bb 100644
--- a/.github/workflows/fast.yml
+++ b/.github/workflows/fast.yml
@@ -9,7 +9,7 @@ on:
       - 'doc/**'
       - 'examples/**'
       - 'tools/**'
-      - *.md
+      - '*.md'
   push:
     branches:
       - master
@@ -18,7 +18,7 @@ on:
       - 'doc/**'
       - 'examples/**'
       - 'tools/**'
-      - *.md
+      - '*.md'
 
 jobs:
   cmake:
diff --git a/.github/workflows/slow.yml b/.github/workflows/slow.yml
index 50d7dea1..4581cfd5 100644
--- a/.github/workflows/slow.yml
+++ b/.github/workflows/slow.yml
@@ -8,7 +8,7 @@ on:
     paths-ignore:
       - 'doc/**'
       - 'tools/**'
-      - *.md
+      - '*.md'
 
 env:
   B2_OPTS: -q -j2 warnings-as-errors=on