diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index de1917f..c9ac219 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -47,12 +47,12 @@ jobs:
  - job: msrv
    pool:
      vmImage: ubuntu-latest
-   displayName: "Minimum supported Rust version: 1.40.0"
+   displayName: "Minimum supported Rust version: 1.43.0"
    dependsOn: []
    steps:
      - template: install-rust.yml@templates
        parameters:
-         rust: 1.40.0 # static-assertions (1.37+) and base64 (1.40+)
+         rust: 1.43.0 # nom6 depends on bitvec (1.43+)
      - script: cargo check
        displayName: cargo check
  - job: integration