diff --git a/__test__/git-version.test.ts b/__test__/git-version.test.ts
index 740d46e7..daf9f416 100644
--- a/__test__/git-version.test.ts
+++ b/__test__/git-version.test.ts
@@ -45,6 +45,31 @@ describe('git-version tests', () => {
     expect(version.checkMinimum(new GitVersion('5.1.2'))).toBeFalsy()
   })
 
+  it('compares an explicit patch of zero', async () => {
+    // A patch component of zero must be compared, not treated as unspecified
+    // (0 is falsy). A patch left unspecified by a two-part version such as
+    // "2.28" is treated as satisfying any patch of that minor version.
+    expect(
+      new GitVersion('4.5.0').checkMinimum(new GitVersion('4.5.1'))
+    ).toBeFalsy()
+    expect(
+      new GitVersion('2.28.0').checkMinimum(new GitVersion('2.28.1'))
+    ).toBeFalsy()
+    expect(
+      new GitVersion('4.5.0').checkMinimum(new GitVersion('4.5.0'))
+    ).toBeTruthy()
+    expect(
+      new GitVersion('4.5.0').checkMinimum(new GitVersion('4.5'))
+    ).toBeTruthy()
+    expect(
+      new GitVersion('4.5.1').checkMinimum(new GitVersion('4.5.0'))
+    ).toBeTruthy()
+    // Unspecified patch satisfies any patch of the same minor version
+    expect(
+      new GitVersion('4.5').checkMinimum(new GitVersion('4.5.0'))
+    ).toBeTruthy()
+  })
+
   it('sparse checkout', async () => {
     const minSparseVer = MinimumGitSparseCheckoutVersion
     expect(new GitVersion('1.0').checkMinimum(minSparseVer)).toBeFalsy()
diff --git a/dist/index.js b/dist/index.js
index 06ae5d22..0d56dda7 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -35553,8 +35553,12 @@ class GitVersion {
             }
             // Minor is equal
             if (this.minor === minimum.minor) {
-                // Patch is insufficient
-                if (this.patch && this.patch < (minimum.patch || 0)) {
+                // Patch is insufficient. The patch component is only compared when it
+                // was explicitly specified: an instance built from a two-part version
+                // (e.g. "2.28") leaves patch as NaN, which is treated as satisfying any
+                // patch of that minor version. An explicit zero must not be mistaken for
+                // an unspecified value, because 0 is falsy.
+                if (!Number.isNaN(this.patch) && this.patch < (minimum.patch || 0)) {
                     return false;
                 }
             }
diff --git a/src/git-version.ts b/src/git-version.ts
index 44bee1ae..ef02243c 100644
--- a/src/git-version.ts
+++ b/src/git-version.ts
@@ -43,8 +43,12 @@ export class GitVersion {
 
       // Minor is equal
       if (this.minor === minimum.minor) {
-        // Patch is insufficient
-        if (this.patch && this.patch < (minimum.patch || 0)) {
+        // Patch is insufficient. The patch component is only compared when it
+        // was explicitly specified: an instance built from a two-part version
+        // (e.g. "2.28") leaves patch as NaN, which is treated as satisfying any
+        // patch of that minor version. An explicit zero must not be mistaken for
+        // an unspecified value, because 0 is falsy.
+        if (!Number.isNaN(this.patch) && this.patch < (minimum.patch || 0)) {
           return false
         }
       }