diff --git a/.github/workflows/dart.yml b/.github/workflows/dart.yml
index 4981b06..cb501bf 100644
--- a/.github/workflows/dart.yml
+++ b/.github/workflows/dart.yml
@@ -7,7 +7,7 @@ on:
     branches: [ master, release, develop ]
 
 env:
-  flutter_version: "1.17.1"
+  flutter_version: "2.0.1"
   java_version: "12.x"
 
 jobs:
diff --git a/.scannerwork/.sonar_lock b/.scannerwork/.sonar_lock
deleted file mode 100644
index e69de29..0000000
diff --git a/.scannerwork/report-task.txt b/.scannerwork/report-task.txt
deleted file mode 100644
index 1debf45..0000000
--- a/.scannerwork/report-task.txt
+++ /dev/null
@@ -1,6 +0,0 @@
-projectKey=calendaroo
-serverUrl=http://localhost:9000
-serverVersion=7.7.0.23042
-dashboardUrl=http://localhost:9000/dashboard?id=calendaroo
-ceTaskId=AXLGvjJfkiYUOLzn9ZUO
-ceTaskUrl=http://localhost:9000/api/ce/task?id=AXLGvjJfkiYUOLzn9ZUO
diff --git a/analysis_options.yaml.sonar b/analysis_options.yaml.sonar
deleted file mode 100644
index a8ec5d8..0000000
--- a/analysis_options.yaml.sonar
+++ /dev/null
@@ -1,60 +0,0 @@
-analyzer:
-  strong-mode:
-    implicit-casts: true
-  errors:
-    # Increase the severity of the unused_import hint.
-    unused_import: warning
-  exclude:
-    - test/data/**
-linter:
-  rules:
-    - empty_statements
-    - unnecessary_brace_in_string_interps
-    #
-    # From pedantic 1.9.0:
-    #
-    - always_declare_return_types
-    - always_require_non_null_named_parameters
-    - annotate_overrides
-    - avoid_empty_else
-    - avoid_init_to_null
-    - avoid_null_checks_in_equality_operators
-    - avoid_relative_lib_imports
-    - avoid_return_types_on_setters
-    - avoid_shadowing_type_parameters
-    - avoid_types_as_parameter_names
-    - camel_case_extensions
-    - curly_braces_in_flow_control_structures
-    - empty_catches
-    - empty_constructor_bodies
-    - library_names
-    - library_prefixes
-    - no_duplicate_case_values
-    - null_closures
-    - omit_local_variable_types
-    - prefer_adjacent_string_concatenation
-    - prefer_collection_literals
-    - prefer_conditional_assignment
-    - prefer_contains
-    - prefer_equal_for_default_values
-    - prefer_final_fields
-    - prefer_for_elements_to_map_fromIterable
-    - prefer_generic_function_type_aliases
-    - prefer_if_null_operators
-    - prefer_is_empty
-    - prefer_is_not_empty
-    - prefer_iterable_whereType
-    - prefer_single_quotes
-    - prefer_spread_collections
-    - recursive_getters
-    - slash_for_doc_comments
-    - type_init_formals
-    - unawaited_futures
-    - unnecessary_const
-    - unnecessary_new
-    - unnecessary_null_in_if_null_operators
-    - unnecessary_this
-    - unrelated_type_equality_checks
-    - use_function_type_syntax_for_parameters
-    - use_rethrow_when_possible
-    - valid_regexps
\ No newline at end of file