diff --git a/lib/modules/manager/pip-compile/readme.md b/lib/modules/manager/pip-compile/readme.md
index dbb856479ba50700682cb013677529d0e642ccbc..09589f039f9ab7ffeccec02c1d24781a0b0e5dff 100644
--- a/lib/modules/manager/pip-compile/readme.md
+++ b/lib/modules/manager/pip-compile/readme.md
@@ -35,7 +35,7 @@ To get Renovate to use another version of Python, add a constraints` rule to the
 ```json
 {
   "constraints": {
-    "python": "3.7"
+    "python": "==3.7"
   }
 }
 ```