diff --git a/Taskfile.yaml b/Taskfile.yaml
index 7d1303893..f877aff46 100644
--- a/Taskfile.yaml
+++ b/Taskfile.yaml
@@ -129,7 +129,7 @@ tasks:
         msg: Please specify generator as first cli arg (ie "task template -- go")
     cmds:
       - >
-        docker run --rm -w /local -v ${PWD}:/local openapitools/openapi-generator-cli:latest author
+        docker run --rm -w /local -v ${PWD}:/local openapitools/openapi-generator-cli:v6.4.0 author
         template -g {{.CLI_ARGS}} -o templates/{{.CLI_ARGS}}
 
   sdk:generate:
@@ -137,13 +137,13 @@ tasks:
     dir: ./sdk
     preconditions:
       - sh: '[ "{{.CLI_ARGS}}" != "" ]'
-        msg: Please specify generator as first cli arg (ie "task generate -- go")
+        msg: Please specify generator as first cli arg (ie "task sdk:generate -- go")
     cmds:
-      - wget https://raw.githubusercontent.com/formancehq/ledger/{{.VERSION}}/pkg/api/controllers/swagger.yaml -O swagger.yaml
+      - cp ../pkg/api/controllers/swagger.yaml .
       - sed -i -e "s/LEDGER_VERSION/{{.VERSION}}/g" swagger.yaml
       - rm -rf ./sdks/{{.CLI_ARGS}}/*
       - >
-        docker run --rm -w /local -v ${PWD}:/local openapitools/openapi-generator-cli:latest generate
+        docker run --rm -w /local -v ${PWD}:/local openapitools/openapi-generator-cli:v6.4.0 generate
         -i ./swagger.yaml
         -g {{ (split "-" .CLI_ARGS)._0 }}
         -c ./configs/{{.CLI_ARGS}}.yaml
diff --git a/pkg/api/controllers/swagger.yaml b/pkg/api/controllers/swagger.yaml
index 6674f7f59..132869d76 100644
--- a/pkg/api/controllers/swagger.yaml
+++ b/pkg/api/controllers/swagger.yaml
@@ -15,13 +15,13 @@ paths:
         "200":
           description: OK
           content:
-            application/json:
+            application/json; charset=utf-8:
               schema:
                 $ref: '#/components/schemas/ConfigInfoResponse'
         default:
           description: Error
           content:
-            application/json:
+            application/json; charset=utf-8:
               schema:
                 $ref: '#/components/schemas/ErrorResponse'
 
@@ -43,13 +43,13 @@ paths:
         "200":
           description: OK
           content:
-            application/json:
+            application/json; charset=utf-8:
               schema:
                 $ref: '#/components/schemas/LedgerInfoResponse'
         default:
           description: Error
           content:
-            application/json:
+            application/json; charset=utf-8:
               schema:
                 $ref: '#/components/schemas/ErrorResponse'
 
@@ -94,7 +94,7 @@ paths:
         default:
           description: Error
           content:
-            application/json:
+            application/json; charset=utf-8:
               schema:
                 $ref: '#/components/schemas/ErrorResponse'
 
@@ -209,13 +209,13 @@ paths:
         "200":
           description: OK
           content:
-            application/json:
+            application/json; charset=utf-8:
               schema:
                 $ref: '#/components/schemas/AccountsCursorResponse'
         default:
           description: Error
           content:
-            application/json:
+            application/json; charset=utf-8:
               schema:
                 $ref: '#/components/schemas/ErrorResponse'
 
@@ -248,13 +248,13 @@ paths:
         "200":
           description: OK
           content:
-            application/json:
+            application/json; charset=utf-8:
               schema:
                 $ref: '#/components/schemas/AccountResponse'
         default:
           description: Error
           content:
-            application/json:
+            application/json; charset=utf-8:
               schema:
                 $ref: '#/components/schemas/ErrorResponse'
 
@@ -286,18 +286,17 @@ paths:
       requestBody:
         description: metadata
         content:
-          application/json:
+          application/json; charset=utf-8:
             schema:
               $ref: '#/components/schemas/Metadata'
         required: true
       responses:
         "204":
           description: No Content
-          content: {}
         default:
           description: Error
           content:
-            application/json:
+            application/json; charset=utf-8:
               schema:
                 $ref: '#/components/schemas/ErrorResponse'
 
@@ -319,13 +318,13 @@ paths:
         "200":
           description: OK
           content:
-            application/json:
+            application/json; charset=utf-8:
               schema:
                 $ref: '#/components/schemas/MappingResponse'
         default:
           description: Error
           content:
-            application/json:
+            application/json; charset=utf-8:
               schema:
                 $ref: '#/components/schemas/ErrorResponse'
 
@@ -344,7 +343,7 @@ paths:
             example: ledger001
       requestBody:
         content:
-          application/json:
+          application/json; charset=utf-8:
             schema:
               $ref: '#/components/schemas/Mapping'
         required: true
@@ -352,13 +351,13 @@ paths:
         "200":
           description: OK
           content:
-            application/json:
+            application/json; charset=utf-8:
               schema:
                 $ref: '#/components/schemas/MappingResponse'
         default:
           description: Error
           content:
-            application/json:
+            application/json; charset=utf-8:
               schema:
                 $ref: '#/components/schemas/ErrorResponse'
 
@@ -388,7 +387,7 @@ paths:
       requestBody:
         required: true
         content:
-          application/json:
+          application/json; charset=utf-8:
             schema:
               $ref: '#/components/schemas/Script'
       responses:
@@ -402,7 +401,7 @@ paths:
               - `errorCode` and `error_code` (deprecated): contains the string code of the error
               - `errorMessage` and `error_message` (deprecated): contains a human-readable indication of what went wrong, for example that an account had insufficient funds, or that there was an error in the provided Numscript.
           content:
-            application/json:
+            application/json; charset=utf-8:
               schema:
                 $ref: '#/components/schemas/ScriptResponse'
 
@@ -426,13 +425,13 @@ paths:
         "200":
           description: OK
           content:
-            application/json:
+            application/json; charset=utf-8:
               schema:
                 $ref: '#/components/schemas/StatsResponse'
         default:
           description: Error
           content:
-            application/json:
+            application/json; charset=utf-8:
               schema:
                 $ref: '#/components/schemas/ErrorResponse'
 
@@ -532,7 +531,7 @@ paths:
         default:
           description: Error
           content:
-            application/json:
+            application/json; charset=utf-8:
               schema:
                 $ref: '#/components/schemas/ErrorResponse'
 
@@ -677,13 +676,13 @@ paths:
         "200":
           description: OK
           content:
-            application/json:
+            application/json; charset=utf-8:
               schema:
                 $ref: '#/components/schemas/TransactionsCursorResponse'
         default:
           description: Error
           content:
-            application/json:
+            application/json; charset=utf-8:
               schema:
                 $ref: '#/components/schemas/ErrorResponse'
 
@@ -713,20 +712,20 @@ paths:
             - `postings`: suitable for simple transactions
             - `script`: enabling more complex transactions with Numscript
         content:
-          application/json:
+          application/json; charset=utf-8:
             schema:
               $ref: '#/components/schemas/PostTransaction'
       responses:
         "200":
           description: OK
           content:
-            application/json:
+            application/json; charset=utf-8:
               schema:
                 $ref: '#/components/schemas/TransactionsResponse'
         default:
           description: Error
           content:
-            application/json:
+            application/json; charset=utf-8:
               schema:
                 $ref: '#/components/schemas/ErrorResponse'
 
@@ -757,13 +756,13 @@ paths:
         "200":
           description: OK
           content:
-            application/json:
+            application/json; charset=utf-8:
               schema:
                 $ref: '#/components/schemas/TransactionResponse'
         default:
           description: Error
           content:
-            application/json:
+            application/json; charset=utf-8:
               schema:
                 $ref: '#/components/schemas/ErrorResponse'
 
@@ -793,17 +792,16 @@ paths:
       requestBody:
         description: metadata
         content:
-          application/json:
+          application/json; charset=utf-8:
             schema:
               $ref: '#/components/schemas/Metadata'
       responses:
         "204":
           description: No Content
-          content: {}
         default:
           description: Error
           content:
-            application/json:
+            application/json; charset=utf-8:
               schema:
                 $ref: '#/components/schemas/ErrorResponse'
 
@@ -834,13 +832,13 @@ paths:
         "200":
           description: OK
           content:
-            application/json:
+            application/json; charset=utf-8:
               schema:
                 $ref: '#/components/schemas/TransactionResponse'
         default:
           description: Error
           content:
-            application/json:
+            application/json; charset=utf-8:
               schema:
                 $ref: '#/components/schemas/ErrorResponse'
 
@@ -860,7 +858,7 @@ paths:
             example: ledger001
       requestBody:
         content:
-          application/json:
+          application/json; charset=utf-8:
             schema:
               $ref: '#/components/schemas/Transactions'
         required: true
@@ -868,13 +866,13 @@ paths:
         "200":
           description: OK
           content:
-            application/json:
+            application/json; charset=utf-8:
               schema:
                 $ref: '#/components/schemas/TransactionsResponse'
         default:
           description: Error
           content:
-            application/json:
+            application/json; charset=utf-8:
               schema:
                 $ref: '#/components/schemas/ErrorResponse'
 
@@ -930,13 +928,13 @@ paths:
         "200":
           description: OK
           content:
-            application/json:
+            application/json; charset=utf-8:
               schema:
                 $ref: '#/components/schemas/BalancesCursorResponse'
         default:
           description: Error
           content:
-            application/json:
+            application/json; charset=utf-8:
               schema:
                 $ref: '#/components/schemas/ErrorResponse'
 
@@ -965,13 +963,13 @@ paths:
         "200":
           description: OK
           content:
-            application/json:
+            application/json; charset=utf-8:
               schema:
                 $ref: '#/components/schemas/AggregateBalancesResponse'
         default:
           description: Error
           content:
-            application/json:
+            application/json; charset=utf-8:
               schema:
                 $ref: '#/components/schemas/ErrorResponse'
 
@@ -1083,13 +1081,13 @@ paths:
         "200":
           description: OK
           content:
-            application/json:
+            application/json; charset=utf-8:
               schema:
                 $ref: '#/components/schemas/LogsCursorResponse'
         default:
           description: Error
           content:
-            application/json:
+            application/json; charset=utf-8:
               schema:
                 $ref: '#/components/schemas/ErrorResponse'
 
diff --git a/sdk/templates/go/Taskfile.yml.mustache b/sdk/templates/go/Taskfile.yml.mustache
index be8841fdc..3afbbb2a0 100644
--- a/sdk/templates/go/Taskfile.yml.mustache
+++ b/sdk/templates/go/Taskfile.yml.mustache
@@ -1,6 +1,10 @@
 version: '3'
 
 tasks:
+  tidy:
+    cmds:
+      - go mod tidy
+
   vendor:
     cmds:
       - go mod vendor
@@ -22,9 +26,10 @@ tasks:
   test:
     desc: Test client code
     deps:
+      - tidy
       - vendor
     cmds:
       - task: start-ledger
       - defer:
           task: stop-ledger
-      - go test
+      - go test -v ./...