diff --git a/packages/scripts/news/4546.breaking b/packages/scripts/news/4546.breaking
new file mode 100644
index 0000000000..468d189887
--- /dev/null
+++ b/packages/scripts/news/4546.breaking
@@ -0,0 +1 @@
+Remove dependency on `simple-git`. It is used by `mrs-developer` but not directly. @davisagli
diff --git a/packages/scripts/package.json b/packages/scripts/package.json
index 95c68bb612..2936321d4f 100644
--- a/packages/scripts/package.json
+++ b/packages/scripts/package.json
@@ -68,8 +68,7 @@
     "fs-extra": "10.1.0",
     "git-url-parse": "^11.6.0",
     "mrs-developer": "*",
-    "pofile": "1.0.10",
-    "simple-git": "3.15.0"
+    "pofile": "1.0.10"
   },
   "devDependencies": {
     "release-it": "14.2.1"
diff --git a/packages/scripts/yarn.lock b/packages/scripts/yarn.lock
index 36c5d848fe..778e6ca55c 100644
--- a/packages/scripts/yarn.lock
+++ b/packages/scripts/yarn.lock
@@ -1941,7 +1941,6 @@ __metadata:
     mrs-developer: "*"
     pofile: 1.0.10
     release-it: 14.2.1
-    simple-git: 3.15.0
   bin:
     addon: ./addon/index.js
     changelogupdater: ./changelogupdater.cjs
@@ -2183,6 +2182,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"async@npm:^3.2.4":
+  version: 3.2.4
+  resolution: "async@npm:3.2.4"
+  checksum: 43d07459a4e1d09b84a20772414aa684ff4de085cbcaec6eea3c7a8f8150e8c62aa6cd4e699fe8ee93c3a5b324e777d34642531875a0817a35697522c1b02e89
+  languageName: node
+  linkType: hard
+
 "asynckit@npm:^0.4.0":
   version: 0.4.0
   resolution: "asynckit@npm:0.4.0"
@@ -2464,7 +2470,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"chalk@npm:^2.0.0":
+"chalk@npm:^2.0.0, chalk@npm:^2.4.2":
   version: 2.4.2
   resolution: "chalk@npm:2.4.2"
   dependencies:
@@ -2577,13 +2583,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"colors@npm:^1.4.0":
-  version: 1.4.0
-  resolution: "colors@npm:1.4.0"
-  checksum: 98aa2c2418ad87dedf25d781be69dc5fc5908e279d9d30c34d8b702e586a0474605b3a189511482b9d5ed0d20c867515d22749537f7bc546256c6014f3ebdcec
-  languageName: node
-  linkType: hard
-
 "combined-stream@npm:^1.0.8":
   version: 1.0.8
   resolution: "combined-stream@npm:1.0.8"
@@ -2683,7 +2682,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"debug@npm:^4.0.1, debug@npm:^4.1.0, debug@npm:^4.1.1, debug@npm:^4.3.4":
+"debug@npm:^4.1.0, debug@npm:^4.1.1, debug@npm:^4.3.4":
   version: 4.3.4
   resolution: "debug@npm:4.3.4"
   dependencies:
@@ -3840,14 +3839,15 @@ __metadata:
   linkType: hard
 
 "mrs-developer@npm:*":
-  version: 1.6.0
-  resolution: "mrs-developer@npm:1.6.0"
+  version: 2.1.0
+  resolution: "mrs-developer@npm:2.1.0"
   dependencies:
-    colors: ^1.4.0
-    simple-git: ^1.132.0
+    async: ^3.2.4
+    chalk: ^2.4.2
+    simple-git: ^3.3.0
   bin:
     missdev: src/command.js
-  checksum: 7154612bfa0f316b7a443bf4bc698bf46ba953900a5f134c67048974134a678218a0624e92c81ec1d84f5b923593b6a2c0d768a72d6ea4199fa769a30fe9530a
+  checksum: 11a47dee219fb4986a591195ea18d47602741f90d66ccb94378d619979c0bc52284590cc11f48da60fbbd463765904fc60a3800fb5f786caa9c5a5610cbece86
   languageName: node
   linkType: hard
 
@@ -4609,23 +4609,14 @@ __metadata:
   languageName: node
   linkType: hard
 
-"simple-git@npm:3.15.0":
-  version: 3.15.0
-  resolution: "simple-git@npm:3.15.0"
+"simple-git@npm:^3.3.0":
+  version: 3.17.0
+  resolution: "simple-git@npm:3.17.0"
   dependencies:
     "@kwsites/file-exists": ^1.1.1
     "@kwsites/promise-deferred": ^1.1.1
     debug: ^4.3.4
-  checksum: 4733d1b769965a7608254c3a5b27532e02e60d4369bc9b397ce47159dd153344a3774739fd2602f693947ed64631b30145b970988fb007b5b779459e9abcdee8
-  languageName: node
-  linkType: hard
-
-"simple-git@npm:^1.132.0":
-  version: 1.132.0
-  resolution: "simple-git@npm:1.132.0"
-  dependencies:
-    debug: ^4.0.1
-  checksum: 717d7cf7919ebe771b2562ed70c79c3971ac650d9577a15c47052472f8e549a088aea593b6a7245d73af0425a202106e6c236d35a73dc4c48dce99bf7b4f939a
+  checksum: 977a05cb0b5087296348b5afa682ce552f43234f5fd29b44c3d7f56b3682d10dcb03752a418e508aaffcbdb6ea2e304a3ef10095197d6743d2353adb85f32592
   languageName: node
   linkType: hard
 
diff --git a/yarn.lock b/yarn.lock
index 520b246b8a..f5aa1197cb 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -21874,13 +21874,13 @@ __metadata:
   linkType: hard
 
 "simple-git@npm:^3.3.0":
-  version: 3.15.1
-  resolution: "simple-git@npm:3.15.1"
+  version: 3.17.0
+  resolution: "simple-git@npm:3.17.0"
   dependencies:
     "@kwsites/file-exists": ^1.1.1
     "@kwsites/promise-deferred": ^1.1.1
     debug: ^4.3.4
-  checksum: 2b97c3ba3c0709eded408013336bf1822be4171d965f3ab45f5bfc05ec690f9e488e11280bec8e2faa05d3039c4769e9d8197040a48dc5cf21cc5c7fa22fe77f
+  checksum: 977a05cb0b5087296348b5afa682ce552f43234f5fd29b44c3d7f56b3682d10dcb03752a418e508aaffcbdb6ea2e304a3ef10095197d6743d2353adb85f32592
   languageName: node
   linkType: hard