diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5cf0a8f..30f8e2b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -11,7 +11,7 @@ jobs:
       fail-fast: false
       matrix:
         python-version: [3.6, 3.7, 3.8]
-        poetry-version: [1.0, 1.1.8]
+        poetry-version: [1.0, 1.1.11]
         os: [ubuntu-18.04, macos-latest, windows-latest]
     runs-on: ${{ matrix.os }}
     steps:
diff --git a/README.md b/README.md
index 0b59021..406e815 100644
--- a/README.md
+++ b/README.md
@@ -26,7 +26,7 @@ jobs:
       fail-fast: false
       matrix:
         python-version: [3.6, 3.7, 3.8]
-        poetry-version: [1.0, 1.1.8]
+        poetry-version: [1.0, 1.1.11]
         os: [ubuntu-18.04, macos-latest, windows-latest]
     runs-on: ${{ matrix.os }}
     steps:
diff --git a/action.yml b/action.yml
index 7db1669..94913bc 100644
--- a/action.yml
+++ b/action.yml
@@ -8,7 +8,7 @@ inputs:
   poetry-version:
     description: "The version of poetry to install"
     required: true
-    default: "1.1.8"
+    default: "1.1.11"
 runs:
   using: "composite"
   steps: