diff --git a/Pipfile b/Pipfile
index 864aa52..3267585 100644
--- a/Pipfile
+++ b/Pipfile
@@ -12,7 +12,7 @@ supportLibEasyT = "~=0.1.0"
 [dev-packages]
 pdtj = "*"
 pytest = "~=7.0.1"
-coverage = "~=6.3.2"
+coverage = "~=7.6.1"
 pytest-cov = "~=3.0.0"
 black = "*"
 pre-commit = "*"
diff --git a/Pipfile.lock b/Pipfile.lock
index abca927..435fc33 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "7eb29dd5886d19773cc914adf6672cc6db4337122fb9da5e96627eb77022b3fb"
+            "sha256": "87f8456fb2b654c306700fbf9cd4fbb398343f50fea551d6d3c7cb5b097dce12"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -173,50 +173,82 @@
                 "toml"
             ],
             "hashes": [
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-                "sha256:1414e8b124611bf4df8d77215bd32cba6e3425da8ce9c1f1046149615e3a9a31",
-                "sha256:2781c43bffbbec2b8867376d4d61916f5e9c4cc168232528562a61d1b4b01879",
-                "sha256:2ab88a01cd180b5640ccc9c47232e31924d5f9967ab7edd7e5c91c68eee47a69",
-                "sha256:338c417613f15596af9eb7a39353b60abec9d8ce1080aedba5ecee6a5d85f8d3",
-                "sha256:3401b0d2ed9f726fadbfa35102e00d1b3547b73772a1de5508ef3bdbcb36afe7",
-                "sha256:462105283de203df8de58a68c1bb4ba2a8a164097c2379f664fa81d6baf94b81",
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-                "sha256:cb5311d6ccbd22578c80028c5e292a7ab9adb91bd62c1982087fad75abe2e63d",
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             ],
             "index": "pypi",
-            "version": "==6.3.3"
+            "markers": "python_version >= '3.8'",
+            "version": "==7.6.1"
         },
         "decli": {
             "hashes": [