diff --git a/CHANGELOG.md b/CHANGELOG.md
index ead220b8..6080e701 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Change log
 
-#### 1.5.1 (UNRELEASED)
+#### 1.5.1 (2021-02-19)
 
 Bug fixes:
 * Fixed a shader compilation issue arising on some Windows configuration (#210)
diff --git a/poetry.lock b/poetry.lock
index 66675295..f32f645b 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -323,7 +323,7 @@ python-dateutil = ">=2.1"
 
 [[package]]
 name = "moderngl"
-version = "5.6.3"
+version = "5.6.4"
 description = "ModernGL: High performance rendering for Python 3"
 category = "main"
 optional = false
@@ -662,7 +662,7 @@ numpy = ">=1.14.5"
 
 [[package]]
 name = "scipy"
-version = "1.6.0"
+version = "1.6.1"
 description = "SciPy: Scientific Library for Python"
 category = "main"
 optional = false
@@ -1204,30 +1204,30 @@ matplotlib = [
     {file = "matplotlib-3.3.4.tar.gz", hash = "sha256:3e477db76c22929e4c6876c44f88d790aacdf3c3f8f3a90cb1975c0bf37825b0"},
 ]
 moderngl = [
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-    {file = "moderngl-5.6.3-cp35-cp35m-manylinux1_i686.whl", hash = "sha256:c5d664ed88e6955a76dd8f928d47e1d9f311a6bf704dad7b7b35461e0a984549"},
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+    {file = "moderngl-5.6.4-cp38-cp38-win_amd64.whl", hash = "sha256:ce87962b91635d857cac4a753c5d5f647d94dc66dcb0f090bb8d758fd226c3e8"},
+    {file = "moderngl-5.6.4-cp39-cp39-macosx_10_9_x86_64.whl", hash = "sha256:3fb139bcdd25eae2c546e5788e9d8719f6c4b18a2ba68a9df31699b4ac57d62d"},
+    {file = "moderngl-5.6.4-cp39-cp39-win32.whl", hash = "sha256:fc5cc1601a3df8f45f1901c6b9960731e0619d1781b0d036e12341fbf2ef55d3"},
+    {file = "moderngl-5.6.4-cp39-cp39-win_amd64.whl", hash = "sha256:1c74b71c9acee9f0e69807a086d76e92f37c1960c3bb1d6a6e2472fd03f7be5b"},
+    {file = "moderngl-5.6.4.tar.gz", hash = "sha256:8c6d04559f5e3bf75a18525cd46d213c0f3a8409363718978e6de691bdb551fb"},
 ]
 multiprocess = [
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@@ -1514,25 +1514,25 @@ scipy = [
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 shapely = [
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diff --git a/pyproject.toml b/pyproject.toml
index 026c2e34..f9a64b7b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "vpype"
-version = "1.5.1-alpha.0"
+version = "1.5.1"
 description = "The Swiss Army knife of vector graphics for pen plotters"
 authors = ["Antoine Beyeler <abeyeler@ab-ware.com>"]
 license = "MIT"