diff --git a/.github/workflows/split-monorepo.yaml b/.github/workflows/split-monorepo.yaml
new file mode 100644
index 000000000..2a1faefa1
--- /dev/null
+++ b/.github/workflows/split-monorepo.yaml
@@ -0,0 +1,23 @@
+name: gitsplit
+on:
+  push:
+    branches:
+      - main
+      - split
+  release:
+    types: [published]
+  create:
+  workflow_dispatch:
+
+jobs:
+  gitsplit:
+    runs-on: ubuntu-latest
+    steps:
+      - name: checkout
+        run: git clone "$GITHUB_SERVER_URL/$GITHUB_REPOSITORY" "$GITHUB_WORKSPACE" && cd "$GITHUB_WORKSPACE" && git checkout $GITHUB_SHA
+      - name: Split repositories
+        uses: docker://jderusse/gitsplit:latest
+        with:
+          args: gitsplit
+        env:
+          GH_TOKEN: ${{ secrets.GITSPLIT_TOKEN }}
\ No newline at end of file
diff --git a/.gitsplit.yml b/.gitsplit.yml
new file mode 100644
index 000000000..0b732aada
--- /dev/null
+++ b/.gitsplit.yml
@@ -0,0 +1,30 @@
+# Path to a cache directory Used to speed up the split over time by reusing git's objects
+cache_url: "/cache/gitsplit"
+
+# Path to the repository to split (default = current path)
+project_url: "https://github.com/open-telemetry/opentelemetry-php.git"
+
+# List of splits.
+splits:
+  - prefix: "proto/otel"
+    target: "https://${GH_TOKEN}@github.com/opentelemetry-php/gen-otlp-protobuf.git"
+  - prefix: "thrift/jaeger"
+    target: "https://${GH_TOKEN}@github.com/opentelemetry-php/gen-jaeger-thrift.git"
+  - prefix: "src/Context"
+    target: "https://${GH_TOKEN}@github.com/opentelemetry-php/context.git"
+  - prefix: "src/SemConv"
+    target: "https://${GH_TOKEN}@github.com/opentelemetry-php/sem-conv.git"
+  - prefix: "src/API"
+    target: "https://${GH_TOKEN}@github.com/opentelemetry-php/api.git"
+  - prefix: "src/SDK"
+    target: "https://${GH_TOKEN}@github.com/opentelemetry-php/sdk.git"
+  - prefix: "src/Contrib"
+    target: "https://${GH_TOKEN}@github.com/opentelemetry-php/sdk-contrib.git"
+
+# List of references to split (defined as regexp)
+origins:
+  - ^main$
+  - ^test$
+  - ^split$
+  - ^v\d+\.\d+\.\d+$
+  - ^\d+\.\d+\.\d+$
diff --git a/Makefile b/Makefile
index 22157b841..c3183a4e2 100644
--- a/Makefile
+++ b/Makefile
@@ -64,4 +64,6 @@ w3c-test-service:
 	@docker-compose -f docker-compose.w3cTraceContext.yaml run --rm php ./tests/TraceContext/W3CTestService/symfony-setup
 semconv:
 	./script/semantic-conventions/semconv.sh
+split:
+	docker-compose -f docker/gitsplit/docker-compose.yaml --env-file ./.env up
 FORCE:
diff --git a/docker/gitsplit/docker-compose.yaml b/docker/gitsplit/docker-compose.yaml
new file mode 100644
index 000000000..d7d54f72c
--- /dev/null
+++ b/docker/gitsplit/docker-compose.yaml
@@ -0,0 +1,9 @@
+version: '3.7'
+services:
+  gitsplit:
+    image: jderusse/gitsplit
+    volumes:
+    - ../../:/srv
+    - ../../var/cache/gitsplit:/cache/gitsplit
+    environment:
+      GH_TOKEN: ${GITSPLIT_TOKEN:-''}
diff --git a/proto/otel/composer.json b/proto/otel/composer.json
index 4455a50b1..2e98ab113 100644
--- a/proto/otel/composer.json
+++ b/proto/otel/composer.json
@@ -1,5 +1,5 @@
 {
-    "name": "open-telemetry/proto-otel",
+    "name": "open-telemetry/gen-otlp-protobuf",
     "description": "PHP protobuf files for communication with OpenTelemetry OTLP collectors/servers.",
     "keywords": ["opentelemetry", "otel", "metrics", "tracing", "logging", "apm", "gRPC", "protobuf", "otlp"],
     "type": "library",
diff --git a/src/API/composer.json b/src/API/composer.json
index 0c476fe14..2f32e8d9f 100644
--- a/src/API/composer.json
+++ b/src/API/composer.json
@@ -17,7 +17,7 @@
     },
     "autoload": {
         "psr-4": {
-            "OpenTelemetry\\API\\": ""
+            "OpenTelemetry\\API\\": "."
         }
     }
 }
diff --git a/src/Context/composer.json b/src/Context/composer.json
index df9be9b76..97aa4a3a4 100644
--- a/src/Context/composer.json
+++ b/src/Context/composer.json
@@ -15,7 +15,7 @@
     },
     "autoload": {
         "psr-4": {
-            "OpenTelemetry\\Context\\": ""
+            "OpenTelemetry\\Context\\": "."
         }
     },
     "suggest": {
diff --git a/src/Contrib/composer.json b/src/Contrib/composer.json
index 7ee334bd9..d5cb11aa1 100644
--- a/src/Contrib/composer.json
+++ b/src/Contrib/composer.json
@@ -16,6 +16,8 @@
         "nyholm/dsn": "^2.0.0",
         "open-telemetry/api": "self.version",
         "open-telemetry/context": "self.version",
+        "open-telemetry/gen-jaeger-thrift": "self.version",
+        "open-telemetry/gen-otlp-protobuf": "self.version",
         "open-telemetry/proto-otel": "self.version",
         "open-telemetry/sdk": "self.version",
         "open-telemetry/sem-conv": "self.version",
@@ -28,7 +30,7 @@
     },
     "autoload": {
         "psr-4": {
-            "OpenTelemetry\\Contrib\\": ""
+            "OpenTelemetry\\Contrib\\": "."
         }
     },
     "suggest": {
diff --git a/src/SDK/composer.json b/src/SDK/composer.json
index 8a913fe10..4cdf06418 100644
--- a/src/SDK/composer.json
+++ b/src/SDK/composer.json
@@ -25,7 +25,7 @@
     },
     "autoload": {
         "psr-4": {
-            "OpenTelemetry\\SDK\\": ""
+            "OpenTelemetry\\SDK\\": "."
         }
     },
     "suggest": {
diff --git a/thrift/jaeger/composer.json b/thrift/jaeger/composer.json
new file mode 100644
index 000000000..a8a0adbd3
--- /dev/null
+++ b/thrift/jaeger/composer.json
@@ -0,0 +1,22 @@
+{
+    "name": "open-telemetry/gen-jaeger-thrift",
+    "description": "PHP Thrift files for communication with Jaeger.",
+    "keywords": ["opentelemetry", "otel", "tracing", "jaeger", "thrift"],
+    "type": "library",
+    "license": "Apache-2.0",
+    "authors": [
+        {
+            "name": "opentelemetry-php contributors",
+            "homepage": "https://github.com/open-telemetry/opentelemetry-php/graphs/contributors"
+        }
+    ],
+    "require": {
+        "php": "^7.4 || ^8.0",
+        "packaged/thrift": "^0.15.0"
+    },
+    "autoload": {
+        "psr-4": {
+            "Jaeger\\Thrift\\": "."
+        }
+    }
+}