diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4e3f7fab7..709e3cf87 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,7 @@
 
 ## [Unreleased]
 
+- Updated Poetry from 1.8.5 to 2.0.1. ([#1734](https://github.com/heroku/heroku-buildpack-python/pull/1734))
 
 ## [v274] - 2025-01-08
 
diff --git a/lib/poetry.sh b/lib/poetry.sh
index 062639b3a..a227ae1cd 100644
--- a/lib/poetry.sh
+++ b/lib/poetry.sh
@@ -99,8 +99,8 @@ function poetry::install_poetry() {
 
 # Note: We cache site-packages since:
 # - It results in faster builds than only caching Poetry's download/wheel cache.
-# - It's safe to do so, since `poetry install --sync` fully manages the environment
-#   (including e.g. uninstalling packages when they are removed from the lockfile).
+# - It's safe to do so, since `poetry sync` fully manages the environment (including
+#   e.g. uninstalling packages when they are removed from the lockfile).
 #
 # With site-packages cached there is no need to persist Poetry's download/wheel cache in the build
 # cache, so we let Poetry write it to the home directory where it will be discarded at the end of
@@ -109,8 +109,7 @@ function poetry::install_poetry() {
 function poetry::install_dependencies() {
 	local poetry_install_command=(
 		poetry
-		install
-		--sync
+		sync
 	)
 
 	# On Heroku CI, all default Poetry dependency groups are installed (i.e. all groups minus those
diff --git a/requirements/poetry.txt b/requirements/poetry.txt
index b7c67421a..d1c8013e2 100644
--- a/requirements/poetry.txt
+++ b/requirements/poetry.txt
@@ -1 +1 @@
-poetry==1.8.5
+poetry==2.0.1
diff --git a/spec/hatchet/ci_spec.rb b/spec/hatchet/ci_spec.rb
index 824564447..fcd7198ba 100644
--- a/spec/hatchet/ci_spec.rb
+++ b/spec/hatchet/ci_spec.rb
@@ -161,7 +161,7 @@
           -----> Using Python #{DEFAULT_PYTHON_MAJOR_VERSION} specified in .python-version
           -----> Installing Python #{DEFAULT_PYTHON_FULL_VERSION}
           -----> Installing Poetry #{POETRY_VERSION}
-          -----> Installing dependencies using 'poetry install --sync'
+          -----> Installing dependencies using 'poetry sync'
                  Installing dependencies from lock file
                  
                  Package operations: 5 installs, 0 updates, 0 removals
@@ -223,7 +223,7 @@
           -----> Restoring cache
           -----> Using cached install of Python #{DEFAULT_PYTHON_FULL_VERSION}
           -----> Installing Poetry #{POETRY_VERSION}
-          -----> Installing dependencies using 'poetry install --sync'
+          -----> Installing dependencies using 'poetry sync'
                  Installing dependencies from lock file
                  
                  No dependencies to install or update
diff --git a/spec/hatchet/poetry_spec.rb b/spec/hatchet/poetry_spec.rb
index 0429c0310..24e23c236 100644
--- a/spec/hatchet/poetry_spec.rb
+++ b/spec/hatchet/poetry_spec.rb
@@ -14,7 +14,7 @@
           remote: -----> Using Python #{DEFAULT_PYTHON_MAJOR_VERSION} specified in .python-version
           remote: -----> Installing Python #{DEFAULT_PYTHON_FULL_VERSION}
           remote: -----> Installing Poetry #{POETRY_VERSION}
-          remote: -----> Installing dependencies using 'poetry install --sync --only main'
+          remote: -----> Installing dependencies using 'poetry sync --only main'
           remote:        Installing dependencies from lock file
           remote:        
           remote:        Package operations: 1 install, 0 updates, 0 removals
@@ -51,7 +51,7 @@
           remote: -----> Restoring cache
           remote: -----> Using cached install of Python #{DEFAULT_PYTHON_FULL_VERSION}
           remote: -----> Using cached Poetry #{POETRY_VERSION}
-          remote: -----> Installing dependencies using 'poetry install --sync --only main'
+          remote: -----> Installing dependencies using 'poetry sync --only main'
           remote:        Installing dependencies from lock file
           remote:        
           remote:        No dependencies to install or update
@@ -78,7 +78,7 @@
           remote:        - The Poetry version has changed from 1.8.4 to #{POETRY_VERSION}
           remote: -----> Installing Python #{LATEST_PYTHON_3_13}
           remote: -----> Installing Poetry #{POETRY_VERSION}
-          remote: -----> Installing dependencies using 'poetry install --sync --only main'
+          remote: -----> Installing dependencies using 'poetry sync --only main'
           remote:        Installing dependencies from lock file
           remote:        
           remote:        Package operations: 1 install, 0 updates, 0 removals
@@ -107,7 +107,7 @@
           remote:        - The package manager has changed from pip to poetry
           remote: -----> Installing Python #{DEFAULT_PYTHON_FULL_VERSION}
           remote: -----> Installing Poetry #{POETRY_VERSION}
-          remote: -----> Installing dependencies using 'poetry install --sync --only main'
+          remote: -----> Installing dependencies using 'poetry sync --only main'
           remote:        Installing dependencies from lock file
           remote:        
           remote:        Package operations: 1 install, 0 updates, 0 removals
@@ -221,7 +221,7 @@
           remote:  !     See: https://devcenter.heroku.com/articles/python-runtimes
           remote: 
           remote: -----> Installing Poetry #{POETRY_VERSION}
-          remote: -----> Installing dependencies using 'poetry install --sync --only main'
+          remote: -----> Installing dependencies using 'poetry sync --only main'
           remote:        Installing dependencies from lock file
           remote:        
           remote:        Package operations: 1 install, 0 updates, 0 removals
@@ -240,10 +240,10 @@
     it 'fails the build' do
       app.deploy do |app|
         expect(clean_output(app.output)).to include(<<~OUTPUT)
-          remote: -----> Installing dependencies using 'poetry install --sync --only main'
+          remote: -----> Installing dependencies using 'poetry sync --only main'
           remote:        Installing dependencies from lock file
           remote:        
-          remote:        pyproject.toml changed significantly since poetry.lock was last generated. Run `poetry lock [--no-update]` to fix the lock file.
+          remote:        pyproject.toml changed significantly since poetry.lock was last generated. Run `poetry lock` to fix the lock file.
           remote: 
           remote:  !     Error: Unable to install dependencies using Poetry.
           remote:  !